OK, got the turbo on, and I am seeing very little to no boost. And lag is horrible. I have two wastegates before the 76mm Precision Turbo. Springs are .2bar, so like 3-4lbs springs. With both wastegates hooked up, I am seing like 1 pound of boost, and NO WASTGATES, I see like a max of 6-7lbs. Shouldn't this thing be able to make like 20 lbs. And I see NOTHING in 1st gear, no matter what, but second i can see bout 3 lbs, and 3rd and up like 6-7. That is with NO wastegates at all. Is it maybe a major Boost leak that i am just not seeing??

 

I'd go over the cold side with a fine tooth comb.... that much piping and the possibilities are just about endless for a leak... do you have a big restriction maybe before the turbo???

 

No real restrictions, just the cats, and those are 2 BIG converters

 

I'd NEVER recommend running a catalytic converter before the turbine... if that thing comes apart, your turbo's done.

I was mainly talking about pre turbo, on the cold side.

 

OH, then no, nothing before

 

that size turbo with those cubes should give you almost instant boost. and max at maybe 8psi? not sure the exact one you used but I'd say thats definitely not right.

 

If a piston comes apart the turbo is gone too

 

Don't jinx me now

 

Tierods truck spiked to 17# before with the precision 76. What size wastegates you runnin? Also have you tried to compress air into the charge side? Might be having a leak somewhere in the charge pipe.

 

Yea, i think it has to be a leak, but just checking the possibilities. Wastegates are two 38mm