Seriously,horsepower limit with the APS kit?
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Joined: Dec 2004
Posts: 28
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From: buffalo, ny
Originally Posted by RedLeader
APS is rolling out their new fuel system and it started me thinking; Who's making big horsepower with the APS kit(players with upgraded turbos not included)? I'm stuck at 563whp with an AAM fuel system, big exhaust, built motor and cams. I keep hearing it's capable of 800whp. Anybody making over 600 with the stock turbos? Even with the Forge wastegate actuators and heavier springs, I couldn't sustain over 17lbs. of boost....
What's it take? Water/methanol injection? Even bigger injectors?
Thanks,
Bruce
What's it take? Water/methanol injection? Even bigger injectors?
Thanks,
Bruce
Originally Posted by nitrouz
715rwhp @ 8000rpms. Water/Methenol injection, fully built block, 3.5" custom downpipes, 3" custom true dual, plenum, cams, 9.? comp., 22psi.
Gman2004-
Yeah, I had the motor built here in Portland by TorqueFreaks, but they're not a Unichip dealer, so they couldn't tune it. I'd spoken with Rob Fuller at Z-Car Garage about several install questions during the process and he's such a great guy, he actually called me when it was done to ask how it all worked-out! He's swamped and I'm not even his customer and he made a follow-up call! Long story short: I drove the car to CA and left the car with Rob for a couple of months. I am REALLY happy with the work they did. Their dyno numbers are verifiable........
Legend4life- I have a Greddy electronic boost controller. I was trying to avoid chopping-up the APS kit. They keep claiming higher HP, or I would've gone with external wastegates, instead of swapping wastegate actuators TWICE.
Yeah, I had the motor built here in Portland by TorqueFreaks, but they're not a Unichip dealer, so they couldn't tune it. I'd spoken with Rob Fuller at Z-Car Garage about several install questions during the process and he's such a great guy, he actually called me when it was done to ask how it all worked-out! He's swamped and I'm not even his customer and he made a follow-up call! Long story short: I drove the car to CA and left the car with Rob for a couple of months. I am REALLY happy with the work they did. Their dyno numbers are verifiable........
Legend4life- I have a Greddy electronic boost controller. I was trying to avoid chopping-up the APS kit. They keep claiming higher HP, or I would've gone with external wastegates, instead of swapping wastegate actuators TWICE.
Last edited by RedLeader; Apr 10, 2006 at 08:39 AM. Reason: amended response
my350z.com
Originally Posted by 1G'
I love this site HAHAHAHA
On the other hand, I wouldn't have met Rob at Z-Car Garage or Ted at Scott Performance without this site.....
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Joined: Dec 2004
Posts: 28
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From: buffalo, ny
Red,
The turbo's are definitely good for 400hp as rated, they have made 400whp from one of them on other applications, so they do have the flow capability. Seeing as how you already have cams, built motor, big exhaust, backpressure or VE should not be an issue holding back the level of boost/power either. But if you're not able to turn up the boost past 17psi, it is definitely the internal wastegates. Internate wastegates, even upgraded, are pretty crappy for high boost and high power levels. IMO, you should just remove the internal wastegates, weld the flappers shut, go with some nice Tial 44mm or maybe Turbosmart wastegates and nice big dumptubes that dump under the car angled away from the engine bay. You will see huge gains in power and will be able to turn up the boost to the turbos' max potential. If the rest of your complete setup is up to par, including tuning, you should be able to hit 800whp
The turbo's are definitely good for 400hp as rated, they have made 400whp from one of them on other applications, so they do have the flow capability. Seeing as how you already have cams, built motor, big exhaust, backpressure or VE should not be an issue holding back the level of boost/power either. But if you're not able to turn up the boost past 17psi, it is definitely the internal wastegates. Internate wastegates, even upgraded, are pretty crappy for high boost and high power levels. IMO, you should just remove the internal wastegates, weld the flappers shut, go with some nice Tial 44mm or maybe Turbosmart wastegates and nice big dumptubes that dump under the car angled away from the engine bay. You will see huge gains in power and will be able to turn up the boost to the turbos' max potential. If the rest of your complete setup is up to par, including tuning, you should be able to hit 800whp
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Joined: Dec 2003
Posts: 155
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From: Sac
Originally Posted by RedLeader
This site has cost me a lot of money
On the other hand, I wouldn't have met Rob at Z-Car Garage or Ted at Scott Performance without this site.....
On the other hand, I wouldn't have met Rob at Z-Car Garage or Ted at Scott Performance without this site.....
I agree Red. it's funny how we're all like a bunch of girls!! my friend is better then your friend. End of the day how much different does it really matter? i would bet not a ton.
Matters not at all, its all in good fun. I would like to know what Nissan has planed for the 350. With the g35 change coming you know the 350 isnt far behind. Its crazy because shops have made so much cash off the 350 and G. The question is will we still be modding the 350 when the new model comes out. I hope it lasts.
Originally Posted by G352NV
Matters not at all, its all in good fun. I would like to know what Nissan has planed for the 350. With the g35 change coming you know the 350 isnt far behind. Its crazy because shops have made so much cash off the 350 and G. The question is will we still be modding the 350 when the new model comes out. I hope it lasts.
GTR here I come!!! In 2008 though. Not buying a first year run car EVER again. So I figure I've got two years to pay the Z off and then turn it into a race only car. Hell the MkIV Supra only ran for 5 years and look at that. The Z will be the same...
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Joined: Dec 2003
Posts: 175
Likes: 0
From: Los Gatos, CA
Hi....
The last dyno sheet was 715rwhp @ 8,000 rpm. The car was still running rich.. So he put it back on the dyno.. I dont believe he took a reading when he adjusted it...So i dont know my final number But i can tell you that with 295 drag radials , the tires spin at 60 mph!!!... With my stock aps turbos... it holds 22psi of boost... Scott performance has put alot of R&D to raise the boost this high.. At one point he had the boost to 25psi on the dyno.... But the turbos were running to hard.. so he lowered it down to 22 psi , which is the max effeciency... I have reached the limit with this turbo kit.... I also have methnol/water injection that turns on at 15 psi boost...along with many other custom things... I would love to video tape my boost gauge but it is very hard for a passenger to hold the camera while i accelerate... if and when i get bored with this power i have big boy turbos waiting for install...
The last dyno sheet was 715rwhp @ 8,000 rpm. The car was still running rich.. So he put it back on the dyno.. I dont believe he took a reading when he adjusted it...So i dont know my final number But i can tell you that with 295 drag radials , the tires spin at 60 mph!!!... With my stock aps turbos... it holds 22psi of boost... Scott performance has put alot of R&D to raise the boost this high.. At one point he had the boost to 25psi on the dyno.... But the turbos were running to hard.. so he lowered it down to 22 psi , which is the max effeciency... I have reached the limit with this turbo kit.... I also have methnol/water injection that turns on at 15 psi boost...along with many other custom things... I would love to video tape my boost gauge but it is very hard for a passenger to hold the camera while i accelerate... if and when i get bored with this power i have big boy turbos waiting for install...
Last edited by marluci7; Apr 12, 2006 at 04:06 PM.
Originally Posted by marluci7
Hi....
The last dyno sheet was 715rwhp @ 8,000 rpm. The car was still running rich.. So he put it back on the dyno.. I dont believe he took a reading when he adjusted it...So i dont know my final number But i can tell you that with 295 drag radials , the tires spin at 60 mph!!!... With my stock aps turbos... it holds 22psi of boost... Scott performance has put alot of R&D to raise the boost this high.. At one point he had the boost to 25psi on the dyno.... But the turbos were running to hard.. so he lowered it down to 22 psi , which is the max effeciency... I have reached the limit with this turbo kit.... I also have methnol/water injection that turns on at 15 psi boost...along with many other custom things... I would love to video tape my boost gauge but it is very hard for a passenger to hold the camera while i accelerate... if and when i get bored with this power i have big boy turbos waiting for install...
The last dyno sheet was 715rwhp @ 8,000 rpm. The car was still running rich.. So he put it back on the dyno.. I dont believe he took a reading when he adjusted it...So i dont know my final number But i can tell you that with 295 drag radials , the tires spin at 60 mph!!!... With my stock aps turbos... it holds 22psi of boost... Scott performance has put alot of R&D to raise the boost this high.. At one point he had the boost to 25psi on the dyno.... But the turbos were running to hard.. so he lowered it down to 22 psi , which is the max effeciency... I have reached the limit with this turbo kit.... I also have methnol/water injection that turns on at 15 psi boost...along with many other custom things... I would love to video tape my boost gauge but it is very hard for a passenger to hold the camera while i accelerate... if and when i get bored with this power i have big boy turbos waiting for install...
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Joined: Apr 2005
Posts: 2,059
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From: CALI
Originally Posted by Gman2004
what are you doing to prevent "head lift" if it's even that what everyone is experiencing? Are you sleeved? what head gaskit are you using? and what size studs?
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