So i decided to get on her today and to my surprise as soon as i hit the gas and the turbo starts to spool the whole car like bounces and hesitates to go anywhere. What could this be from. Car was justtuned, spark plugs were changed and boost leak test was done. If i try to log with the accessport itll say logging then when i go wot itll say cant connect to ecu? Thats the other problem. Strange thingsare happening lol.

 

bump...

 

I could be totally wrong with my answer but mine did the same thing. I cured it by lowering the boost. When it is much colder weather than when I tuned my car it does this. Basically, with the denser air, I was over boosting. Not sure if your weather affected it or not but just a suggestion.

 

Bingo sounds like boost(fuel cut)..Lower the boost then m.b.c all the way down test then redial the desired boost level for tune.

 

I agree, sounds like overboost or your tuner accidentally put you in valet mode. But valet mode is usually set at 3500 so if you can go over 3500 then it is more than likely overboost. Just turn the boost controller down or pull the wastegate line and try another pull.

let us know if it fixes the problem.

Mikey

 

check your spark plug gap

 

turns out it was a vacuum line that attaches to the fuel rail. It keeps popping off.

 

When this line pops off you get a lean condition causing the problem you described.

 

A little glue and zip ties for the fpr vacuum line. If it's one of the fuel return lines, then change to a worm clamp.

 

Whats code P0090? Fuel pressure solenoid circuit?

 

https://www.evolutionm.net/forums/la...ing-p0090.html

Something related to the leak/line popping off is triggering the code.