Ok. Hopefully I'll have time this weekend to check again. Thanks again for the advice.

Topical areas to look for with this kit is under the manifold. If your doing the smoke check start at the intake filters, before SC. That will show you leaks in the SC boot were BOV ties in. Second pull vent line off intake tube and smoke it out. That will show leaks in the TB's, Vacuum Lines and under the manifold.

My Boost showed 11 psi then dropped after a few days, my issue was getting the manifold tighten with equal pressure on all the bolts. One to tight or loose will create a leak. Flaw in design of intake, no access to do it right.

Check with tuner: If he can't get 3 runs with solid numbers to establish his Base Line to adjust from, it may not be your tune at all.

With these kits the MAF's are close to the filters when the cooling fan from the tuner turns on it can create + pressure reading in the MAF and throw the base line off. Tuner continues to tune of bad base line. Happened to a few people here on the forum. Called Stillen and got no help.

Here is what I did to try to get 500 HP:
DW 650 injectors
CJM Fuel Return System
DW 300 fuel pump
928 Impeller
Ditched hose clamps and added pressure bands
Drilled out the intake and added AN12 fittings to flow more coolant
Removed battery and added 1/2 gallon reservoir for cooling
Added UpRev MAF's
Added Turbo Smart BOV
COG drive belt to eliminate slip

In the end, i saw 480 max and was plagued with leaks. Every weekend went through the car to fix leaks. Every tune power dropped. Every smoke check was always showing something new.

Good luck, its a good kit as is for daily driving and fun, 50 state legal and all.

Well I guess this is bad news for me since I bought your kit. . .

ooohhhh....snap

WOW !!! Opps ,


So anyways I never had one leak with mine. I also ran 457 WHP no leaks "yea yea 3 days only" but in stock form never had an issue with any leaks, BTW only got 6 months out of it that way too :(

I never had leak problems but I did have the bearings go bad in the blower.

How can you tell the bearings are going bad?

I never updated this. There was a leak and I got it fixed. Haven't had an issue since!

Just for the record: I Sold A Solid Kit !!! Removed all my weird science stuff before sending it him!


Not bad news for you. You have stock kit with stock pulley's, stock kit injectors, stock MAF Sensors. Your not running 12 lbs to 11 lbs of boost. The kit i gave you is not what i was running with it. Intake manifold is fine for what the kit is designed for, not what i was doing to it!

Huge difference buddy!

You will be fine, for those of us that always try to get the most out of our kits, we experience more issue. Always pushing it to the max. Hope you enjoy the power you'll get. Key is having a good installer that knows what there doing to get the most reliable set up.

Didn't mean to come off like I was "attacking" you. It was very frustrating to deal with at the time. It's been running very well since the leak was fixed!

Six months! :shakes head:

Yes, I know.

I got the leak fixed. Then I was able to have some fun before putting it away for the winter. Posting on the forum wasn't on my mind at that time.

Took it to a car show this past Sunday and it was a blast to drive :excited: !