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Turbo lag issues! Please help!

turbofoxlx

Well-known member
Joined
Dec 1, 2008
Messages
64
Location
Lima, OH
Hello all, I'm having a weird lag issue with my new mhi e16g that you guy's might be able to help me with. Prior to the installation of my sbr mbc I was seeing max boost from the factory wg (approximately 9-11psi) at about 3000 rpm. This is where it gets weird, after I installed the mbc and setting it to about 16-18 psi it would still see the the same 9-11 psi by 3000 rpm and then hold pretty steady till about 5000 rpm and then slowly rise to max boost just before the limiter. I've tried messing with the tune and it has not changed this condition. The car seems to pull fine with no hesitation please let me know what you think.
My combo is as follows:
stock long block
evoIII 16g
sbr mbc
3" down pipe
2.5" exhaust - no cat or resonator
550cc rc injectors
255 intank
aeromotive afpr
maft & 3" gm mas
SAFC II
and a logger

Thank you,
Mario
 
Last edited:

Yeah a few year back when i had my 1G i had the same problem and it was from a boost leak and a crappy BOV
 

curtis

Well-known member
Joined
May 4, 2003
Messages
11,892
Location
Clarksville TN
Do a boost leak test and check the t-body seals while your at it but sounds like the crappy stock BOV want hold
 

turbofoxlx

Well-known member
Joined
Dec 1, 2008
Messages
64
Location
Lima, OH
Sorry guys had to lend the g-ride to my old man while his truck gets repaired but was able to do a quick boost leak test before he took it.
There was a few small leaks detected- biss, front tb gasket, and my sbr mbc. I went to the mitsu dealer and ordered a new biss & o-ring, rubber cap for biss, and a new set of tb gaskets that should arrive tuesday. I should have the car this sunday or monday but on the bright side he had it waxed and put some tints on it for me! /ubbthreads/images/graemlins/grin.gif
would even very small leaks cause this?
Thanks,
Mario
 
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