I finally took my test pipes off for stock cats for now and it brought the boost down to around 8.7 PSI. But one thing I noticed (and this happened before too) trying to start the car sometimes is really rough...like it barely starts....also the idle is really low as well. Is this normal? Something that is fixed in tuning?

 

Your ECU is probably adjusting to the extra back pressure. Should clear up after a hundred miles or so. Give it some time.

 

Awesome, that'd be sweet if that was the case Anybody else just want to confirm so I can get more than one input for verification

 

I'll throw in one more comment. Any time we make major mods to the car, there is an element of ECU learning that needs to take place. I have witnesses idle A/F ratios move from 12.5:1 to 14.7:1 in about 30 miles of driving.

 

I wouldn't be grinning about that....