FCon iS vs. UTEC
03-13-2007 | 05:37 AM
#22
Originally Posted by DaveFunction2ND
I iS is a very advanced piggyback system compared to other piggy backs in that it is able to communicate with the OBD2 system and automatically clear out check engine lights and also keep the ECU in open loop mode at all times or additionally at time when it needs to control things. It still modifies the crank and cam position sensors and uses the OEM MAF scaling type system to control the injectors. It can be used to eliminate the stock MAF and use the HKS pressure sensor instead but most maintain the stock MAF.
The UTEC is much better in the fact that in boost in directly controls the firing of the injectors and the coils (standalone style) as opposed ot the iS which is still unsing the OEM inputs and modifying the signal to "fool" the stock ECU. If you are FI and have a VQ35 the UTEC is a much better choice.
The iS is designed for HKS to use with its Bolt-On Upgrade kits becasue the price point is lower then the Pro. It is also a great unit for those that have Supra's, 3000GT's and 300ZX's that want to convert from MAF to MAP based tuning (those car's gain 30 to 50 hp just by converting) since they are FI already and not nearly as much change is required to get theor ECUs to work with upgrades.
Hope that helps. In the end the UTEC is what you want to go with for you budget (obviously someone is going to say the Pro is the best and I agree but for your situation and exact question the UTEC is the best)
The UTEC is much better in the fact that in boost in directly controls the firing of the injectors and the coils (standalone style) as opposed ot the iS which is still unsing the OEM inputs and modifying the signal to "fool" the stock ECU. If you are FI and have a VQ35 the UTEC is a much better choice.
The iS is designed for HKS to use with its Bolt-On Upgrade kits becasue the price point is lower then the Pro. It is also a great unit for those that have Supra's, 3000GT's and 300ZX's that want to convert from MAF to MAP based tuning (those car's gain 30 to 50 hp just by converting) since they are FI already and not nearly as much change is required to get theor ECUs to work with upgrades.
Hope that helps. In the end the UTEC is what you want to go with for you budget (obviously someone is going to say the Pro is the best and I agree but for your situation and exact question the UTEC is the best)
03-13-2007 | 05:44 AM
#24
Originally Posted by DaveFunction2ND
I iS is a very advanced piggyback system compared to other piggy backs in that it is able to communicate with the OBD2 system and automatically clear out check engine lights and also keep the ECU in open loop mode at all times or additionally at time when it needs to control things. It still modifies the crank and cam position sensors and uses the OEM MAF scaling type system to control the injectors. It can be used to eliminate the stock MAF and use the HKS pressure sensor instead but most maintain the stock MAF.
The UTEC is much better in the fact that in boost in directly controls the firing of the injectors and the coils (standalone style) as opposed ot the iS which is still unsing the OEM inputs and modifying the signal to "fool" the stock ECU. If you are FI and have a VQ35 the UTEC is a much better choice.
The iS is designed for HKS to use with its Bolt-On Upgrade kits becasue the price point is lower then the Pro. It is also a great unit for those that have Supra's, 3000GT's and 300ZX's that want to convert from MAF to MAP based tuning (those car's gain 30 to 50 hp just by converting) since they are FI already and not nearly as much change is required to get theor ECUs to work with upgrades.
Hope that helps. In the end the UTEC is what you want to go with for you budget (obviously someone is going to say the Pro is the best and I agree but for your situation and exact question the UTEC is the best)
The UTEC is much better in the fact that in boost in directly controls the firing of the injectors and the coils (standalone style) as opposed ot the iS which is still unsing the OEM inputs and modifying the signal to "fool" the stock ECU. If you are FI and have a VQ35 the UTEC is a much better choice.
The iS is designed for HKS to use with its Bolt-On Upgrade kits becasue the price point is lower then the Pro. It is also a great unit for those that have Supra's, 3000GT's and 300ZX's that want to convert from MAF to MAP based tuning (those car's gain 30 to 50 hp just by converting) since they are FI already and not nearly as much change is required to get theor ECUs to work with upgrades.
Hope that helps. In the end the UTEC is what you want to go with for you budget (obviously someone is going to say the Pro is the best and I agree but for your situation and exact question the UTEC is the best)
I understand this may of been asked or answered before but basically it's been said the UTEC is completely safe under 600whp and anything over that you really should go FCON. Is this generally correct?
Last edited by BrianLG35C; 03-13-2007 at 05:50 AM.
03-13-2007 | 06:08 AM
#25
Originally Posted by BrianLG35C
Wow, finally someone has some info! Thanks for the informative review! I understand this may of been asked or answered before but basically it's been said the UTEC is completely safe under 600whp and anything over that you really should go FCON. Is this generally correct?
I understand this may of been asked or answered before but basically it's been said the UTEC is completely safe under 600whp and anything over that you really should go FCON. Is this generally correct?
. Utec is safe OVER 600WHP in the hands of a good tunner !!!!!!!!Not saying that Vpro is a waste of money ,is just tha the ECU is as good as the tunner with the tunning experience !!!!!!!!
03-13-2007 | 06:24 AM
#26
Originally Posted by Javierg35
I actually personally know of 2 g35 running really high whp here in Puerto Rico , one with 680whp and the other 729whp both daily driven . Utec is safe OVER 600WHP in the hands of a good tunner !!!!!!!!
Not saying that Vpro is a waste of money ,is just tha the ECU is as good as the tunner with the tunning experience !!!!!!!!
. Utec is safe OVER 600WHP in the hands of a good tunner !!!!!!!!Not saying that Vpro is a waste of money ,is just tha the ECU is as good as the tunner with the tunning experience !!!!!!!!
03-13-2007 | 07:05 AM
#27
Originally Posted by BrianLG35C
Wow, finally someone has some info! Thanks for the informative review! I understand this may of been asked or answered before but basically it's been said the UTEC is completely safe under 600whp and anything over that you really should go FCON. Is this generally correct?
I understand this may of been asked or answered before but basically it's been said the UTEC is completely safe under 600whp and anything over that you really should go FCON. Is this generally correct?The PRO shines becasue of its map resolution and preciseness as well as "tunability" and "user-interface" for the tuner. This additional resolution and precision allows the tuner to blend and optomize many more sites so that Partial Throttle and WOT are optomized for every condition (excluding catosprophic mechanical events, but this type of thing is outside any EMS's control). This means, real world, the FCON PRO will offer better smoother, more fuel efficient and completely optimized DRIVABILITY at both WOT and Partial Throttle. Lets remember, PARTIAL THROTTLE is where we spend almost 80% of our time. Even then at 600+RWHP you will not be able to apply WOT until higher speeds due to traction so not suprisingly this is when you begin to need more resolution and precision under more conditions. Esspecially if this is a street vehicle. Also choose your EMS based on your INTENDED USE AND HP GOALS. A drag only race car needs WOT tunabity. A street or road race car needs much more.
03-13-2007 | 07:28 AM
#30
I currently run the F-Con iS in my APS ST. I would have to agree w/ Dave regarding drivability. I use to run the Greddy EU and had a few problems w/ it when combined w/ the APS ST. I chose the iS because of price and because of my intended use. 80% of cars life will be spent on the street, the other 20% on road coarse where WOT is sparingly used. Price wise, the iS can be a steal for all the things it can do compared to other piggy backs. There is also the added feature where the iS can be connected to a screen and used like the HKS CAMP system. Also because the iS uses the same harness as the V-Pro I have the added luxury of not having to purchase that if I wanna upgrade. Hope that helps coming from an end-user. Oh, since I'm in Houston, I have the luxury of having a good tuner like Mark over at SGP who is a certified HKS dealer. Good luck w/ whatever you decide.
03-13-2007 | 07:35 AM
#31
Originally Posted by MethodRN
I currently run the F-Con iS in my APS ST. I would have to agree w/ Dave regarding drivability. I use to run the Greddy EU and had a few problems w/ it when combined w/ the APS ST. I chose the iS because of price and because of my intended use. 80% of cars life will be spent on the street, the other 20% on road coarse where WOT is sparingly used. Price wise, the iS can be a steal for all the things it can do compared to other piggy backs. There is also the added feature where the iS can be connected to a screen and used like the HKS CAMP system. Also because the iS uses the same harness as the V-Pro I have the added luxury of not having to purchase that if I wanna upgrade. Hope that helps coming from an end-user. Oh, since I'm in Houston, I have the luxury of having a good tuner like Mark over at SGP who is a certified HKS dealer. Good luck w/ whatever you decide.
03-13-2007 | 11:11 AM
#32
Originally Posted by DaveFunction2ND
The UTEC has significatly less resolution then the FCON PRO. What this means to the end user is that WOT operation will most likely be very stable but the optomized fuel and ignition curves may not be able to be achieved. In the real world this means that the tune will be safe (under WOT conditions) but the vehicle may not pull smoothly to redline. There may be small missfires or other tuning related gremlins. Plugs may foul out sooner etc etc.
The PRO shines becasue of its map resolution and preciseness as well as "tunability" and "user-interface" for the tuner. This additional resolution and precision allows the tuner to blend and optomize many more sites so that Partial Throttle and WOT are optomized for every condition (excluding catosprophic mechanical events, but this type of thing is outside any EMS's control). This means, real world, the FCON PRO will offer better smoother, more fuel efficient and completely optimized DRIVABILITY at both WOT and Partial Throttle. Lets remember, PARTIAL THROTTLE is where we spend almost 80% of our time. Even then at 600+RWHP you will not be able to apply WOT until higher speeds due to traction so not suprisingly this is when you begin to need more resolution and precision under more conditions. Esspecially if this is a street vehicle. Also choose your EMS based on your INTENDED USE AND HP GOALS. A drag only race car needs WOT tunabity. A street or road race car needs much more.
The PRO shines becasue of its map resolution and preciseness as well as "tunability" and "user-interface" for the tuner. This additional resolution and precision allows the tuner to blend and optomize many more sites so that Partial Throttle and WOT are optomized for every condition (excluding catosprophic mechanical events, but this type of thing is outside any EMS's control). This means, real world, the FCON PRO will offer better smoother, more fuel efficient and completely optimized DRIVABILITY at both WOT and Partial Throttle. Lets remember, PARTIAL THROTTLE is where we spend almost 80% of our time. Even then at 600+RWHP you will not be able to apply WOT until higher speeds due to traction so not suprisingly this is when you begin to need more resolution and precision under more conditions. Esspecially if this is a street vehicle. Also choose your EMS based on your INTENDED USE AND HP GOALS. A drag only race car needs WOT tunabity. A street or road race car needs much more.
Very refreshing to hear a clear concise seemingly impartial review of both units.........that doesn't happen very often around here.....The little hiccups with UTEC are what have been in the back of my mind.......
Thanks Dave....
03-13-2007 | 12:34 PM
#33
Originally Posted by buzzardmountain
Very refreshing to hear a clear concise seemingly impartial review of both units.........that doesn't happen very often around here.....The little hiccups with UTEC are what have been in the back of my mind.......
Thanks Dave....
Thanks Dave....
03-13-2007 | 09:12 PM
#34
Originally Posted by BrianLG35C
I understood from a phone conversation with Mark, there are still some issues with FCON iS, before he'd recommend it as a lower cost alternative for a built/FI motor. Man, I'm confused.
03-14-2007 | 05:27 AM
#35
Originally Posted by BrianLG35C
I understood from a phone conversation with Mark, there are still some issues with FCON iS, before he'd recommend it as a lower cost alternative for a built/FI motor. Man, I'm confused.
If money and finding a hks dealer is not a problem for you , just go with HKS VPRO you can not go wrong there.Like have been said before , HKS is superior to UTEC ,but for your power goals go UTEC.
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