Hey, I could use some help if anyone has experience with what I'm dealing with. My b46 drives fine under part throttle or out of boost. Also, ideas fine, really never misses a beat. ... untill you floor it. Some times it surges, some times their is a lot of lag like it's a big turbo car. On my logs the turbo is always lazy, then the boost spikes and then it just falls off. It's not as noticeable on the stock tune but boost is constantly chasing the target. Mods as drop in filter, exhaust (stock dp) intercooler piping, and intake hard pipe. Theirs no code. I've cleaned the maf sensor, I've looked at the map sensor data which appears to be normal and showes 14.2 psi with the engine off, 12.9ish at idle. Any help or recommendations would really be appreciated




Stockhttps://www.bootmod3.net/log?id=64b85357d10b4356cc2b464d Ots https://www.bootmod3.net/log?id=64b9d84ed10b436beb98831d
I was in the proccess of having a custom file writen for my my car but whatever this is stopped up after only a few revisouns. tuner wasn't much help on what was wrong. I tried to pick his brain. He said it could be the compressor wheel which I don't think is likely or he said "something that effects boost" lol

I did smoke the intake system yesterday day and found one small leak on a pcv line on my forge intake pipe .... so if you have one check it! Had to upside the o ring

 

Anyone else have problems tuning ? Where the boost falls off

 

New info, seems to be all tune related but tuners are having trouble with my car. I'm thinking about switching over to navadi tunes. Anyone have any input ?

 

Honestly, your mod list doesn't really warrant a custom tune and might be more trouble than its worth. Why not go with a tried and true tuner program who builds in fail safes and factory-like performance like Dinan? Their work is solid, comes with a stellar reputation and after you have made much deeper mods, go the custom route.

 

Honestly if I could of flashed the dinan tune I would have but I'm not a fan of shipping my dme out. I have it almost ironed out now with some help from a good tuner. I don't know why the ots tune from bm3 just didn't work well with my car. I wonder if anyone else has had problems