Bucks in 1st gear only.

[tsidrift1]

I have a 92 tsi. All my mods are in my profile. I have been running it at 11lbs right now and it seems to hold pretty good. The only problem I have noticed is that in 1st gear if I hit it and try to build boost it bucks really bad and almost sounds like fuel cut or something. If I shift into second, it is fine, hit it and it holds 11 lbs till 3rd.

Any ideas?


Thanks,
Anthony

 

[spyderturbo007]

I see in your profile that you have a logger. Can you capture a log when it happens?

 

[eclipsegsx1736]

Do you have a GM-MAF? Is it possible that it rained recently and there is water in the filter/intake/IC pipes? I had some methanol or water that had puddled in my IC pipes, and the force from a 1st gear pull was enough to make it suck it up. My MAF reading would spike sky high for a second causing my 950cc injectors hit almost 100% IDC as the turbo spooled up and made the car bog completely down due to the water/methanol hitting the sensor. Only happened in 1st gear due to the quicker spoolup and higher g forces.