SSMongoose02

iTrader: (2)

I searched but didn't really find what I was looking for. Are there any issues with this system? How is it compared to others? I'm coming up on a decision and would just like to get all the info. I can before I buy.

Thanks.

Chris Stewart

iTrader: (1)

I know a local guy running it on his 02 TA, forum member silverbullet02. When I saw him at the track last weekend, he looked very happy! Maybe PM to him? Check this post:

https://ls1tech.com/forums/northwest-members/937964-10-s-baby.html

I can vouch for TTi, top notch quality product and service.

SSMongoose02

iTrader: (2)

sweet, I'll give him a shout. Anyone else feel free to chime in.

Thanks

SPRAYED 01

iTrader: (22)

Im running the qmp kit which is pretty much the same thing. The issues i had was,the IC blocked to much of the condensor/radiator and the engine would over heat with a/c on in really hot weather.
The steering shaft hit the turbo log and i had to space the engine up higher to clear.
2 welds on 2 primaries are starting to crack and leak.
Ive worked around all the issues and have about 4k or trouble free driving already on my kit this year. Not to mention it was on like 3 cars in the last 5 years before me.
I would go for a 76ish mm turbo. That was a regret with mine since i started with the 67mm.
Other than that is works fine and is really simple. Just dont try to push it past about 700crank hp because i would imagine the back pressure with this kit has to be pretty bad with higher boost.

Alex

SSMongoose02

iTrader: (2)

Thats what I was thinking looking at how the crossover is Y'd into the back of the log manifold. I might make close/over 700rwhp.

MIGHTYMOUSE

iTrader: (59)

the qmp has the wastegate after the log so all 8 cylinders have to go through the log all the time.

the tti has the wastegate before the log so once spool is achieved only as much as is necessary to maintain boost level goes through the log..or at a minimum 4 cyl worth.

its still a base kit and was not designed to be efficient in the 700rw range. that is what the tti race kit (like me) have.

SPRAYED 01

iTrader: (22)

But what if those 4 cylinders not being controlled by the wastegate were enough to build more boost than your spring was set to. I would think that over 8cylinders would be better.

MIGHTYMOUSE

iTrader: (59)

well it wont, since the base kit works and holds low boost fine.

Ryan K

iTrader: (11)

I ran one for a while, Solid kit. I had the 76mm version, and with an auto car ran it to 680rwhp. The QMP kit is similar but the quality wasn't there and alot of people had welds crack. The TTi kits Don't crack.

The kit connects both banks of exhaust together with a crossover at the back of the log. The wastegate is on the crossover, and vents the pressure off. It controls both banks of exhaust, not just one side.

Minus fuel and tuning, the kits are very complete.

SPRAYED 01

iTrader: (22)

Im having mine tig welded next week for cracking. With my new tc78 im hoping for 625whp through a 9inch and stalled auto. If i can run a low ten id be very happy.

SSMongoose02

iTrader: (2)

I like the race kit but this is going to be a street car and I don't want to lose A/C.

Ryan K

iTrader: (11)

With my Street kit, I ran a 10.002 @ 138 mph...

SPRAYED 01

iTrader: (22)

Ryan,what weight were you for your 10.002 run and what was you rwhp at that time.

Mekkadon

iTrader: (3)

I had backpressure problems when I had mine...it was 3 to 1 ratio.....very bad...not good if you are pushing it past 10 PSI.

SPRAYED 01

iTrader: (22)

Mekkadon,what psi were you pushing when you had 3:1. Did you have any issues at that backpressure level?

Ryan K

iTrader: (11)

My car is a heavy bitch, 3600-3700lbs with me in it. The HP was around 680 to the wheels threw a 4l60e and moser 9".

I was running at 18psi maxed out. Had no issues with regard to back pressure, although I am sure it was really high.

Ryan K.

SPRAYED 01

iTrader: (22)

What can really happen if you have lets say 3:1 backpressure.

MIGHTYMOUSE

iTrader: (59)

well for one it acts against the exhaust valves and reduces your effective spring pressure

say you have a 300# spring pressure on a 1.5" valve but you have 60psi exhaust pressure

rough math= area = 3.14 (.75)^2 = 1.76 square inches

1.76 square inches * 60psi = 106#

300 - 106 = 194. your spring pressure is reduced quite a bit and is more susceptable to floating the valve.

LivingCanvas

iTrader: (4)

Hey MightyMouse, you said you have the race kit, and from what I gather in other posts of yours, you still run a/c and ps right? Did you have to do some customizing for that? I know you've built yours for a ultimate street car setup....care to share a couple details about that?

Pat-Man

iTrader: (3)

I have the street kit on my Camaro. It did have an issue with over heating with AC on. That has been fixed with programming the fans and running a 160 stat. In the Texas summer heat with AC on it won't go over 225 now.