Which twin turbo kit is better, less turbo lag and more reliable...
Thanks

APS all the way.

110%

I really like my sts kit. Its not as laggy as everyone says it is and makes a pretty decent power. I think theres more room to expand with the aps kit but for daily driving my stage 3 holds pretty good.
Theres tons of threads in regards to this question.

APS is going to be the better kit, but they are both nice. If I had to choose I would definitely choose APS, but it all depends on your goals with the car really.

TTi

Turbotechnology Inc.

APS's customer service bites. Their turbos have had failures. With their original C5 kit premier they screwed a bunch of their vendors.

Buy American made, get better parts and service.

And they have new, more powerful turbos that are going to be available very, very soon.

As far as STS (rear mount) vs front mount for a street car...

Call Nick or George @ TTi (253.475.8319) before you order to get the real info on the difference between the kits. You'll be glad you did!

STS Turbo kits have the best turbo lag of any turbo kit out there. The only way you could get a pair of turbos to spool more slowly is if you mounted them further away from the engine than the mufflers, which is not possible without lengthening the car itself

Although it might have been better to rephrase it as the WORST turbo lag

I think its like a single turbo Supra, except there's no big hp jump after the lag

You missed the joke there The OP asked "Which kit is better", and then asked about turbo lag... I thought it would be funny to talk about the best lag possible, "best" of course being "most impressive".

Aha!

My bad. The interwebs can be difficult on jokes

The APS C6 is a great kit, as it uses a Garrett GT30.... You wont have a failure there

It all depends on the goals of the consumer... Big power? APS C6Z kit... fit, form, function, stock motor? APS C6 kit... American Made? TTi. Fit form function, made in america, TTi....

Lots of options, to the OP- Look DEEP down inside yourself and ask what you really want to do with the car Then make a decision.

That's a very fair comparison, Lou

The "old" TTi turbos make from mid 800's to low 900's it seems. The new turbos should add at least 100rwhp to that, and much easier.

Btw, thanks for the deal on the 3" exhaust!

(and patiently waiting on some more used race calipers to come available )

Actually I kind of had an idea like that. A turbo trailer.

Take a small trailer and put a turbo, intercooler, oiling system, battery, taillights and boost controller on it.

Have a hitch on the car with induction tube installed. Hook up trailer, connect pipe to exhaust, connect induction tube, plug in trailer harness and you're in business

Really though, I would strongly recommend APS or TTi over STS.

In my opinion one of the most fun aspects of a proper turbo car is very strong transient response and part throttle boost response which just isn't there with a rear mount setup.

Sam, only you would give this answer

How could anyone waste money on STS. When the kit came out, I went to a shop in Tampa for checking it out and they had just installed one on a C5 Z06. I drove the car and you press the gas ALL THE WAY, and nothing and then slowly began to build boost. The guy kept saying "What do you think? Isn't great?" I just looked at him and didn't say anything. When we got back, I told him to go for a ride with my Paxton Novi 2000 on a Z06. Good thing I put a plastic bag on the passenger seat before he sat on it...

ttix

then don't forget about the self grenade feature... high back pressure creates higher heat, which is not good for cats, so when cats fail turbo turbine turns into a shrapnel generator .

If STS system was 50 cents on the dollar versus other kits such as APS or TTi then you can say you got what you payed for...

To the OP unless you have a compelling reason to go with STS just get a close coupled system like APS or TTi.


Mike

Not necessarily.
About 45k miles on my setup, and I have at least one bad ball bearing cartridge.

Overall though, I would also suggest either TTi or APS.

Compared to their C5 Kit that uses an undersize mitsu turbo? Thats about 50x more miles out of a set of turbos

Aps kit or tti. I have aps kit, but would buy tti and keep it american.

Very interesting!
So those mitsu's really are small?
I know you've had good results going to the bigger compressors.

Are you capable of offering an upgrade to the GT30's in the base C6 kit?