I am planning supporters for this kit, and need some ideas as to what I need to make this kit as safe as possible. Im looking for 350-400 reliable HP. This kit is a GT35R correct?

APS ST Kit, Duno tunned UTEC, PLX500 wideband with logger, APS TBE

UTEC, tuned by AAM? Is this the best way to go, I've heard mixed reviews on the UTEC.

Now the fuel has me worried with this system out of the box mainly because I don't understand it. how does it work and is there an alternative to this?

Boost Controller?? Is it better to go away from the supplied stuff with the kit? Or go with Electronic or Manual units.

 

350~400? Then you don't even need tuning. Just install it correctly and enjoy. You can get the unichip tuned, but it already comes with very safe tune good for 380whp.

 

I would go st kit, st exhaust, plemun spacer, and spark plugs. that, along with a dyno tune with the unichip, will get you those numbers.

 

As mentioned, with those kind of numbers in mind you don't need much else, do plenum, ST kit and the APS ST exhaust and have it tuned. No need to waste your money on a Utec also no need for a boost controller as the Unichip does that. The fuel system on the kit is a semi return system that allows for a more steady fuel pressure then stock and is good for up to 500+

 

wow thanks, so I should be good with the kit and a dyno tune. I will be installing this myself, has anyone else tried this? It doesnt look too complicated, just looking for some feedback.

 

You pretty much need the ST exhaust to run this kit to get the most out of it, right???

Will you have "gremlins" if you don't?

 

The trickiest part or part you need to be very careful with is the wiring both of the boost selonoid and also of the oil pump, with ones installed at the shop no issues but we have had a couple broght in after the install with problems with the oil pump and leaking oil past the turbo seals.

Otherwise it is like the TT kit just install and tune, of course the tune and hp will depend on the other mods ie plenum and exhaust.

I have become a believer that the APS ST exhaust is the best for the kit and to get the most out of it, we have seen combinations from the stock to modified EVO2 and after installing the APS exhaust the boost stays up and horsepower comes easier.

 

Make sure you get the APS ST Exhaust. It will be your answer for all the boost issues. GL

 

sounds like a nice setup, my aps st goes in tomorrow. Im goign slightly different on the exhaust though, putting the 3" APS meant for the TT on it, by making a custom reverse y-pipe. Should be louder than the APS ST Exhaust

 

+1 on this...I had a chance to drive my APS/ST for a bit with the stock exhaust, and the performance difference after the APS exhaust was like getting a new car....I know that is not technical, but the difference is very evident.

 

In all honesty you shouldve just gotten the 2.5" and ended it. At least that way you know it would work. Fabricating the reverse Y-pipe doesn't guarantee anything even if it is the 3". The flow through the exhaust will only be as good as the shop that is doing it and from my experience it will never be perfect...GL with everything

 

well ive got a shop i trust, and I am dont want a 2 1/2" piping. Too small.

 

Well it is your money and right to hack up a 1500 dollar exhaust but it is really a waste because your down/test pipe is only 3.5 and the dual 2.5" matches up fine as far as flow capacities.

 

That's what I did. My shop made the entire dual 3" exhaust system for me including the reverse Y pipe. It looks very similar to APS and Altered A dual 3" exhausts. Because my exhaust is so free flowing, I have the opposite problem.. "OVERBOOST!" On 6th gear I get 13psi... Normally I should get 11psi.

 

Just curious, what hp numbers are you getting at 11psi?

 

I didn't dyno yet since I up the boost. I can't get the unichip tuned b/c I'm in South Korea. When the boost was set at 8.5psi, I got 370whp on a dynojet.

 

I'm curious about the strain on the stock internals with an out of the box tune. Would it be better to get at least some minor build like rods and pistons at least?

 

If you've got the dough to do it all at once then I say go for a built motor.

 

It's more of a matter of downtime than dough for me, also overkill. I don't wanna be cheap but i don't want to spend money for things that aren't really needed either.

 

I just spoke to Dynocomp here in Phoenix, they are an APS dealer. They told me they have stopped selling the ST kits because they have had quite a few problems with them. He also said he believes that the price drop is because they are going to discontinue them.

Edit:

Please don't get my wrong, I am not trying to talk $hit about this kit. I think APS builds great stuff and the reason I was calling was to ask about having them take off my SC and put this kit on.

Only APS knows if they are going to discontinue it. Also don't take what one place says to be fact. This kit has shown to be great for many people.

I wish I would have gotten more details now. What he told me was they had had quite a few problems with the installation and it was taking almost as long as the TT kits to install. He said the kit was not very high quality and was not made the same standards that APS builds their other kits to; it is mediocre. It was made to be an entry level system and not working out for them. I asked about the price drop and he said that he believes that APS lowered the price to move out their existing inventory so they could discontinue it.
Again I am not trying to make anyone mad or offend anyone. I just thought this would be interesting news coming from an APS dealer.