APS Extreme TT kit vs. Greddy TT kit w/ upgraded 20Gs
Originally Posted by rocks
Mia do you have more info on the haltech actually doing cam control?
http://www.danzioperformance.com/customer_cars_16.asp
I read through the manual but its not clear if it controls the exhaust cam, wich on my revup i need control of. The motec m600 will control it, but its like 3500$ with that and some other things optioned, possibly more. The hydra will only do the intake cam, and after speaking with them im not sure if the factory ECU will still control the exhaust cam or if the control would be disabled, requiring a rewire around thier harness from the factory ecu to enable it. The techtom software that technosquare uses can adjust the cam shaft timing, but to buy the software is 3000$ or so from japan. Greddy Vmanage will only work the intake cam also.
The motec and haltech would be a pain to setup because you would have to leave the factory ecu partially connected to the car. The stock ecu does control the cams well though from the factory but i think there could possibly be more power with full controll.
In my research i have come up with the utec as the best deal, untill someone releases software to tune the factory ecu myself, or a standalone cam control setup.
The motec and haltech would be a pain to setup because you would have to leave the factory ecu partially connected to the car. The stock ecu does control the cams well though from the factory but i think there could possibly be more power with full controll.
In my research i have come up with the utec as the best deal, untill someone releases software to tune the factory ecu myself, or a standalone cam control setup.
i would hold off on the APS Extreme kits until someone proves them to be extreme at all. So far they haven't shown anything over the standard Greddy kit.
We all know that the sky is the limit with the SFR kit - so thats the best guarentee for extreme HP. You can run almost any turbochargers you want with that setup - so there is no point in even looking at what others have done with it, you can do whatever you want with it.
A Greddy kit with 20g upgrades will out-do the APS Extreme kit I am sure... but how far they will go still needs to be proven. I wouldnt be surprised if a properly done 20g conversion could get you to 800+ rwhp.
We all know that the sky is the limit with the SFR kit - so thats the best guarentee for extreme HP. You can run almost any turbochargers you want with that setup - so there is no point in even looking at what others have done with it, you can do whatever you want with it.
A Greddy kit with 20g upgrades will out-do the APS Extreme kit I am sure... but how far they will go still needs to be proven. I wouldnt be surprised if a properly done 20g conversion could get you to 800+ rwhp.
Just wanted to share I know of a local shop who installed an SFR kit in a G35. Horrible fitment issues, they had to send various pieces back because they would never fit including the 2 turbos this customer had requesated-as I know they offer different choices.
I think SGP is partial to the greddy kit becuase they sell so many, plus they are distributors.
Last edited by trefling; Feb 4, 2007 at 05:11 PM.
The reason is, knowone else makes a mass production kit that is readily available like the Greddy kit. They also know, it is the cheapest(price wise) than anyother twin kit on the market. So for the average consumer, this is the best alternative and the easist way to market a product. So more money for them.
Originally Posted by WA2GOOD
Why not go with the JWT 700Bb TT kit. We make 750-800whp on these kits and we have a bunch of them out there now.
Originally Posted by rocks
I read through the manual but its not clear if it controls the exhaust cam, wich on my revup i need control of. The motec m600 will control it, but its like 3500$ with that and some other things optioned, possibly more. The hydra will only do the intake cam, and after speaking with them im not sure if the factory ECU will still control the exhaust cam or if the control would be disabled, requiring a rewire around thier harness from the factory ecu to enable it. The techtom software that technosquare uses can adjust the cam shaft timing, but to buy the software is 3000$ or so from japan. Greddy Vmanage will only work the intake cam also.
The motec and haltech would be a pain to setup because you would have to leave the factory ecu partially connected to the car. The stock ecu does control the cams well though from the factory but i think there could possibly be more power with full controll.
In my research i have come up with the utec as the best deal, untill someone releases software to tune the factory ecu myself, or a standalone cam control setup.
The motec and haltech would be a pain to setup because you would have to leave the factory ecu partially connected to the car. The stock ecu does control the cams well though from the factory but i think there could possibly be more power with full controll.
In my research i have come up with the utec as the best deal, untill someone releases software to tune the factory ecu myself, or a standalone cam control setup.
If you're looking for APS info here, you're not going to get a lot of help. Definite bias against it for some reason... Although the extreme kit will produce more power than the standard, you probably won't hit the 1000whp mark. Turbos don't flow enough...
Anyway, good luck with your research.
Anyway, good luck with your research.
Hey guys,
Thanks for the continued posts with helpful info and suggestions.
After I read some more of your posts, I did more research and realized that a couple of you made some very good points that made me reconsider my decision and my options.
NoLimit made a very good point that the SGP car and the SFR car probably have very different tunes, since there is huge difference between the piggyback Split Second and the stand alone HKS FCon V-Pro. I realize that probably wasn't a fair comparison. However, I made the comparison because the DSport magazine article and SFR's own website were the only sources I readily knew about for some official power numbers for the SFR kit. Which makes me wonder how the SFR kit would perform with a full stand alone EMU such as the FCon. Does anybody out there have the SFR kit tuned with an HKS FCon V-Pro, and if so, what kind of numbers are you putting down?
MIAPLAYA reminded me about the new Turbonetics GT-K turbos. I had totally forgotten about those!
These turbos really sound like they are the next step forward and have some cool features. So that makes me reconsider the SFR kit as well.
So, here is my "Plan C" that I intend to look further into:
-I still intend to have SGP build the motor (not even considering anyone else).
-I'm still leaning heavily towards the HKS FCon V-Pro for engine management (because I still think it's an excellent system and Mark Gust has an awsome reputation as a tuner with this system).
-I'm now seriously considering the SFR kit with GT-K turbos. Since turismo mentioned that the guy he raced had the SFR kit installed by SGP, I would inquire from Mark about doing the same. That way I'm dealing with only one shop and one tuner for the powertrain build, which I think is best.
-Mark also made an excellent point in a phone call with him last year... He said that it is no problem to tweak any turbo kit with a combination of other brands of parts to maximize performance (as they often do with the Greddy kit). So for example, I'll still look into both the APS Extreme fuel system and the AAM (Stage 2, I think?) fuel system.
So, I will ask Mark Gust about all of this when I finally meet him (and hopefully soon
). What do you SFR guys think about this potential setup?
Thanks again guys for all your input.
Keep the suggestions coming!
Thanks for the continued posts with helpful info and suggestions.
After I read some more of your posts, I did more research and realized that a couple of you made some very good points that made me reconsider my decision and my options.
NoLimit made a very good point that the SGP car and the SFR car probably have very different tunes, since there is huge difference between the piggyback Split Second and the stand alone HKS FCon V-Pro. I realize that probably wasn't a fair comparison. However, I made the comparison because the DSport magazine article and SFR's own website were the only sources I readily knew about for some official power numbers for the SFR kit. Which makes me wonder how the SFR kit would perform with a full stand alone EMU such as the FCon. Does anybody out there have the SFR kit tuned with an HKS FCon V-Pro, and if so, what kind of numbers are you putting down?
MIAPLAYA reminded me about the new Turbonetics GT-K turbos. I had totally forgotten about those!
These turbos really sound like they are the next step forward and have some cool features. So that makes me reconsider the SFR kit as well.So, here is my "Plan C" that I intend to look further into:
-I still intend to have SGP build the motor (not even considering anyone else).
-I'm still leaning heavily towards the HKS FCon V-Pro for engine management (because I still think it's an excellent system and Mark Gust has an awsome reputation as a tuner with this system).
-I'm now seriously considering the SFR kit with GT-K turbos. Since turismo mentioned that the guy he raced had the SFR kit installed by SGP, I would inquire from Mark about doing the same. That way I'm dealing with only one shop and one tuner for the powertrain build, which I think is best.
-Mark also made an excellent point in a phone call with him last year... He said that it is no problem to tweak any turbo kit with a combination of other brands of parts to maximize performance (as they often do with the Greddy kit). So for example, I'll still look into both the APS Extreme fuel system and the AAM (Stage 2, I think?) fuel system.
So, I will ask Mark Gust about all of this when I finally meet him (and hopefully soon
). What do you SFR guys think about this potential setup?Thanks again guys for all your input.

Keep the suggestions coming!
Originally Posted by RudeG_v2.0
Hey guys,
Thanks for the continued posts with helpful info and suggestions.
After I read some more of your posts, I did more research and realized that a couple of you made some very good points that made me reconsider my decision and my options.
NoLimit made a very good point that the SGP car and the SFR car probably have very different tunes, since there is huge difference between the piggyback Split Second and the stand alone HKS FCon V-Pro. I realize that probably wasn't a fair comparison. However, I made the comparison because the DSport magazine article and SFR's own website were the only sources I readily knew about for some official power numbers for the SFR kit. Which makes me wonder how the SFR kit would perform with a full stand alone EMU such as the FCon. Does anybody out there have the SFR kit tuned with an HKS FCon V-Pro, and if so, what kind of numbers are you putting down?
MIAPLAYA reminded me about the new Turbonetics GT-K turbos. I had totally forgotten about those!
These turbos really sound like they are the next step forward and have some cool features. So that makes me reconsider the SFR kit as well.
So, here is my "Plan C" that I intend to look further into:
-I still intend to have SGP build the motor (not even considering anyone else).
-I'm still leaning heavily towards the HKS FCon V-Pro for engine management (because I still think it's an excellent system and Mark Gust has an awsome reputation as a tuner with this system).
-I'm now seriously considering the SFR kit with GT-K turbos. Since turismo mentioned that the guy he raced had the SFR kit installed by SGP, I would inquire from Mark about doing the same. That way I'm dealing with only one shop and one tuner for the powertrain build, which I think is best.
-Mark also made an excellent point in a phone call with him last year... He said that it is no problem to tweak any turbo kit with a combination of other brands of parts to maximize performance (as they often do with the Greddy kit). So for example, I'll still look into both the APS Extreme fuel system and the AAM (Stage 2, I think?) fuel system.
So, I will ask Mark Gust about all of this when I finally meet him (and hopefully soon
). What do you SFR guys think about this potential setup?
Thanks again guys for all your input.
Keep the suggestions coming!
Thanks for the continued posts with helpful info and suggestions.
After I read some more of your posts, I did more research and realized that a couple of you made some very good points that made me reconsider my decision and my options.
NoLimit made a very good point that the SGP car and the SFR car probably have very different tunes, since there is huge difference between the piggyback Split Second and the stand alone HKS FCon V-Pro. I realize that probably wasn't a fair comparison. However, I made the comparison because the DSport magazine article and SFR's own website were the only sources I readily knew about for some official power numbers for the SFR kit. Which makes me wonder how the SFR kit would perform with a full stand alone EMU such as the FCon. Does anybody out there have the SFR kit tuned with an HKS FCon V-Pro, and if so, what kind of numbers are you putting down?
MIAPLAYA reminded me about the new Turbonetics GT-K turbos. I had totally forgotten about those!
These turbos really sound like they are the next step forward and have some cool features. So that makes me reconsider the SFR kit as well.So, here is my "Plan C" that I intend to look further into:
-I still intend to have SGP build the motor (not even considering anyone else).
-I'm still leaning heavily towards the HKS FCon V-Pro for engine management (because I still think it's an excellent system and Mark Gust has an awsome reputation as a tuner with this system).
-I'm now seriously considering the SFR kit with GT-K turbos. Since turismo mentioned that the guy he raced had the SFR kit installed by SGP, I would inquire from Mark about doing the same. That way I'm dealing with only one shop and one tuner for the powertrain build, which I think is best.
-Mark also made an excellent point in a phone call with him last year... He said that it is no problem to tweak any turbo kit with a combination of other brands of parts to maximize performance (as they often do with the Greddy kit). So for example, I'll still look into both the APS Extreme fuel system and the AAM (Stage 2, I think?) fuel system.
So, I will ask Mark Gust about all of this when I finally meet him (and hopefully soon
). What do you SFR guys think about this potential setup?Thanks again guys for all your input.

Keep the suggestions coming!
If it were my car, I would choose the Xtreme APS kit. most value for the money. IMO, best quality parts - water cooled turbos, big dump pipes, fuel system with pumps and injectors, top quality FMIC.
The greddy kit definitely has potential, but as far as I am concerned, they are using outdated turbos.
Registered User
iTrader: (4)
Joined: Mar 2005
Posts: 2,880
Likes: 3
From: EveryWhere & yet... NoWhere
You might want to add a 3rd option for a sturdy fuel Kit... CJ Motorsports fuel systems. Their stuff is very good and they are coming out with a new Twin-InTank fuel pump setup...
It should provide all the power you need and it won't leak/smell like one of the other ones you mention does...
--B
It should provide all the power you need and it won't leak/smell like one of the other ones you mention does...
--B
I agree with those above that I have heard of some fitment issues with the SFR kit and there is somewhat of a lack of customer support not only from the company but from those who have run it.
For example, if you were to get the Greddy kit, you would be able to take to tons of people regarding any problems that may arise as it is of course the most popular kit out there.
The APS extreme, while it seems to look like it has the best qaulity and fit, has not been tested to the limits yet as mentioned by charles. I am also not a big fan of the 90degree exhaust dumps back into the downtubes. It just seems like it has some potention for boost creep at crazy boost levels.
Hope that helps.
For example, if you were to get the Greddy kit, you would be able to take to tons of people regarding any problems that may arise as it is of course the most popular kit out there.
The APS extreme, while it seems to look like it has the best qaulity and fit, has not been tested to the limits yet as mentioned by charles. I am also not a big fan of the 90degree exhaust dumps back into the downtubes. It just seems like it has some potention for boost creep at crazy boost levels.
Hope that helps.
Originally Posted by Quamen
I agree with those above that I have heard of some fitment issues with the SFR kit and there is somewhat of a lack of customer support not only from the company but from those who have run it.
For example, if you were to get the Greddy kit, you would be able to take to tons of people regarding any problems that may arise as it is of course the most popular kit out there.
The APS extreme, while it seems to look like it has the best qaulity and fit, has not been tested to the limits yet as mentioned by charles. I am also not a big fan of the 90degree exhaust dumps back into the downtubes. It just seems like it has some potention for boost creep at crazy boost levels.
Hope that helps.
For example, if you were to get the Greddy kit, you would be able to take to tons of people regarding any problems that may arise as it is of course the most popular kit out there.
The APS extreme, while it seems to look like it has the best qaulity and fit, has not been tested to the limits yet as mentioned by charles. I am also not a big fan of the 90degree exhaust dumps back into the downtubes. It just seems like it has some potention for boost creep at crazy boost levels.
Hope that helps.
Just curious how much power you all are looking to make?



