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Having problems any sugestions??' NO boost
Posted: April 16th, 2022, 3:11 am
by Belo1301
I kinda lost my boost somewhere hahah i was driving my car normali and without a warning without a noise i presed the gas and nothing happend no boost.
I have the high load pops and bang tune on it .
My theory is that the cat got distroyed and cluged up the second one and there isnt enough airflow for the turbo to spool up .
My car got a lot quieter like somebody put my mufflers back in 2 sec while i was driving
Here is a log from today i was going full throtle but the max is 73% max boost is 1 psi hahah and the load is never above 0.7 .
Any ideas no DTC no check engine like no nothing.
Re: Having problems any sugestions??' NO boost
Posted: April 16th, 2022, 5:24 am
by mituc
Your theory may be correct, it fits the symptoms.
However, because the factory tune (and the OTS tunes are based on it) compensates quite a lot for fueling deviations and because load never goes high enough we may not be able to see a leak. I suggest to check both the silicone couplers going from the turbo to TMIC and then from the TMIC to the throttle body to see if there's any obvious problem there (cracks in the hoses, missing clamps, popped hoses, and so on).
A while ago I started tuning a car which a clogged cat and the problem was that it would not boost past like 8-10PSI, but not at all sounds like a totally different issue.
And your car is not in limp mode either because we'd not see WGDC going so high (the limp mode load limits are around 1).
Re: Having problems any sugestions??' NO boost
Posted: April 16th, 2022, 6:47 am
by Belo1301
Im going to check tomorrow
Re: Having problems any sugestions??' NO boost
Posted: April 29th, 2022, 7:45 am
by Belo1301
Resolved everything with a downpipe. The first cat got destroyed and clogged the second one so that was the problem.
Re: Having problems any sugestions??' NO boost
Posted: February 20th, 2024, 11:14 pm
by Stinow
mituc wrote: ↑April 16th, 2022, 5:24 am
Your theory may be correct, it fits the symptoms.
However, because the factory tune (and the OTS tunes are based on it) compensates quite a lot for fueling deviations and because load never goes high enough we may not be able to see a leak. I suggest to check both the silicone couplers going from the turbo to TMIC and then from the TMIC to the throttle body to see if there's any obvious problem there (cracks in the hoses, missing clamps, popped hoses, and so on).
A while ago I started tuning a car which a clogged cat and the problem was that it would not boost past like 8-10PSI, but not at all sounds like a totally different issue.
And your car is not in limp mode either because we'd not see WGDC going so high (the limp mode load limits are around 1).
Yesterday I installed a new FMIC (had a TMIC). Noticed that about 4 rubbers were quite short en didnt fit well. Did a testdrive and after 5 mins the car would stutter a lot and barely able to drive a descent speed.
Will buy longer rubber couplers now for sure after reading this Mituc