i think its in early to mid 700s ... i think his user name is (bigbrig)

 

With that said..... the highest 'legitimate' hp claim I have personally seen is MrTomcat's car with a 609 whp dyno @ 18psi. this was done with the APS 2.5" exhaust none-the-less.

off the top of my head:
sleeved 3.5 litre motor
9:1 CR pistons
JWT cams
meth injection on 100 octane tune
Fcon Vpro
3.5" test pipes
2.5" APS exhaust

I was going to attempt to push my setup to those limits, but the longer it sits apart, the more I am tempted to keep it at low to mid 500s

You would need to have the extreme kit's manifolds, turbos, and dump pipes, along with the EWG

 

Ahh come on dude go for it. I felt the same way a few months ago, but more and more peopel are touching 600's so it is safer (on our current builds) than was thought before. I'd like to go a bit over 600whp if possible.

How much longer before yours is back up?

 

Good luck. Greddy TD05-18g are capable of 600WHP and we did it so other people before us. i am just not sure if the standard PS turbo are capable. so far i only saw one dyno sheet of APS turbos doing 608WHP.

 

On a 3.8L with aps tt, 3.5" downpipes, 3" true dual exhaust, aam stage II fuel , rc 750cc's, UTEC, ats triple disc clutch, aps plenum, meth injection, 50/50 mix of 91/101 fuel, I made 600rwhp, and almost 650 ft lbs of tq at almost 20psi

I run a non-sleeved 3.5L now, all the same above mentioned mods, and made 570rwhp/ 560tq on 17psi....


TODD

 

I hear what you are saying, but for me, anything over ~500 is kind of wasted anyways. We'll see though, maybe a few runs on the dyno to see what it has in her.

The engine shop is taking longer than expected and we ran into a few road blocks along the way that weren't expectedy My motor should be back together in about a week or two and then the usual reinstall and tune time period.

 

Hi Todd,
Thank you for your reply. Amazingly, the car we are building has exactly the same setup you have except for the U-Tec, we are using F-Con. To be honest with you 650lb of torque and 600WHP sounds like these turbos are pushed beyond there limits.

 

I am going to have a couple of maps. low boost around 14-16psi, high boost 18psi, and a race gas map although I'll probably drive around on the high boost all the time. When I first got my car back with the built motor I used to drive on low boost and only hit high boost occassionally, but after a while low boost felt slow. Now even high boost (525whp) feels slow.

I hear what you're saying about more than 500whp on the street, but after driving the car at 525whp for over a year I kinda got the hang of working the pedal so the car don't spin all over the place in the lower gears like it used to. Also moving to wider tires (295/30 PS2's) helped. When these tires wear out I am going up to 305/30's.

 

600 is almost the gold standard these days... Amazing what we've come to

OP - good luck with your quest for complete world domination . Sounds like a solid build you've got going on there.

 

I remember when it was a big deal to be in the 500whp club. Things have progressed SO much in the last year and a half!

 

ill be running

aps TT
1000cc inj
gtm stage 2 cams
greddy TT exhaust
aps 3" test pipes
built motor on a revup engine

im gonna try to push over 600rwhp in the next month so stay tuned

 

i cant wait to see this....hopefully my car will be fast enough to keep your car in the picture when i record some flybys and ****

 

I have a second set of rims for the road course trck, with some stocky r compounds... I haven't put my street wheels back on yet, as these wheels stick on the street like no other, I can still lose traction, but much less than when running a street tire. The track tires are cheaper than the street tires as well, so when they wear out prematurely from all the street use, buying another set is a frcation of what the street tires cost

 

This might be a stupid question but do you mean 570 on the block or 570 on the wheels? I have a 3.5l built and sleeved, aps standard turbo kit, extreme fuel system and external WG. I am hoping to make 700 hp on the block , so +-600rwhp? I thought that aps claimed the turbos could make 800 hp? 650 rwhp?

 

Husam,

If 700rwhp is your goal (as was mine) I would not waste time with the standard APS kit and upgrade to the APS Extreme if the customer wishes. It is designed for the big power with a larger intercooler and external waste gates.

If the customer wants to keep his current setup and get the most out of it, I don't predict anything over 650rwhp (dynojet)

Either way post up your results, they will be interesting!

Good Luck,

-George
GT Motorsports

 

Agreed

 

Hi George,
Thank you for the advice. the car is a shop car and we bought it equipped with APS standard TT kit. now i dint want to throw the hole kit. we are defiantly looking for 700+WHP. we are building the engine with Darton 100mm sleeves and we would like to have a car that will run 550+ on low boost 91 pump gas, and 700+ on high boost race gas. do you know if it is possible to swap the APS Extreme turbos and convert them to internal WG cause i have no idea about the APS system and this is the first time for us as we usually do Greddy?

 

I am thinking about swapping these Garrett Turbos:
Garrett - GT2871R 743347-1

I don't know how they compare to the AP Extreme units. in fact, i am looking for something even a bit bigger than these Garrett turbos but i am worried about the fitments issue.

 

Does any one now what turbine inlet flange type the APS turbos are?
GT25 or T3