hope it holds up for you..

 

What's wrong with the Spec clutch? Doesn't it hold at least or more than the JWT? Several FI Zs are running that clutch.

 

The spec clutch will be fine. (under)Rated at 525 tq. I am running the 2+ on my car and haven't had the clutch slip yet.

As far as maxing out the turbo, he will need a new fuel system (at least injectors) and EMS to max it out. I would think he could pull about 440-460 whp on the APS out of box setup (maybe an upgraded actuator). He should pull near 500 lbs of tq though.

 

We've installed a few SPEC 3+ with their flywheel into a few of our customers' TT G35, ST 350, N/A 350 and supply a few shops in the area with the 3+ for the VQ35. Their clutch has been great to us!

We have had a 3+ with an upgraded pressure plate to hold upwards to 800 lb/ft of TQ. I am awaiting a full report from my customer to seehow he likes it.

 

Keep us posted on the dyno tuned results. You will likely find that the single turbo APS will deliver a good trq hit for sure.

 

You won't reach 500whp most that have tried can only get in the 440 range and that is with stock compression. I am assuming you went with lower compression on your built motor. I suspect you will be around the 430 - 450whp although your torque may be considerably higher. With the APS ST it seems as though the key ingredient will be cams in order to reach your goal...

 

He will go to 500 with additional fuel

 

agreed. Right from the beginning we kinda all felt that fuel and EMS seems to be the limiting factor. After I break in the motor and tune it, I'll see where I'm at.... next spring will be the EMS and upgraded fuel system. I have full faith in GRD!

 

wtf had a build aps single, iirc he made 450 from GRD. 500 is gonna be on the edge of the turbos eff range regardless of how much fuel you got. i wish you the best tho synth. make us aps folks proud.

 

He ran to around 450 because of fuel limitations. 50 hp willl be easy to pick up with more fuel

 

I hope the turbo for the APS ST System is bigger than the TT System

 

Its GT35R which I thought was capable of 600hp? I cannot remember if that is crank or wheel horsepower though. I have friends who run a similar turbo on an Evo and STi and they are hitting around 520whp on pump gas, I dont see why the VQ wouldnt be capable of doing so.

 

tony, those numbers are crank hp. do you know what psi those cars are running. the evo is probably somewhere around 20-25psi.

ziv, isnt the fuel supply included in the single and twin aps kit the same. why can some achieve 500+ with the system but you say 450 is the limit?

 

He has a built motor which leads me to think he lowered his compression. With X amount of fuel, you can make more power with a higher static compression.

 

my friend ran 29psi on his Evo.. and thats a 2.0L engine but I know I'm comparing apples to oranges here.

 

enron, wtf did have a built motor, but i think there are people running built motors with the stock aps fuel setup making 500. i may be wrong.

ive seen a few evos running high boost making those numbers running meth. even a few with a 37R making around 550. but the majority of evos with 35rs are right at 500, which if you calculate 25% drivetrain loss is around 675 crank hp, which is higher than what garrett says it will produce.

i really hope he gets 500, that would be great. im just a little sceptical.

 

I'm making 440whp with the stock injectors right now. i do have cams. i'm also at 9.5psi. i figured at 15psi i should be close to 500whp if not more.

 

thats due to the cams. quite impressive since im at 12psi and only making 380ish. still, you get to a point where upping the boost hurts more than helps, and id bet its at 500-525 with this turbo on this engine.

is the 440 at 9.5 with the c-16? what exhaust do you have?

 

Yes, the fuel supplies are the same. The reason some can hit 500+ with the fuel system is because they are running stock compression. Otherwise, they would at least need to upgrade injectors. The APS supplied fuel system is good for around 450 whp when you drop compression to around 8.5-9:1.

WTF's setup was dropped compression and the out of box APS setup. He didn't have fuel to go beyond 440-450 whp. With the addition of at least injectors (preferably a full return style) and injector scalable EMS, 500 would be no problem with the APS ST setup.

 

I got the TIG488 setup of course!!!! I got the JIC stainless with the Ti muffler. I also have the resonator removed. I also have the forged actuator with the 9-15psi spring.