Opinions on Tune...Not what you think

[Tre06GTP1SC]

So I just upgraded from a P1 to a D1. Im wondering if you guys think my tune, specifically, AFR will change? I haven't driven the car yet but plan on doing some datalogging this weekend.

According to procharger their guesstimate is that I will only add about 5psi with my setup. With the P1 I was making 14psi, so I expect to be close to 20 now.

I did crank the car and let it run for awhile and no noticeable issues at idle, also no noticeable change in AFR at idle. Im guessing that I really won't see any changes until I go WOT. What do you guys think?

 

[white05gt]

You need to get retuned since you are increasing the boost that much.

 

[95ragtop]

Yes you will need to tune it, just keep it out of boost until you do. I've swapped pulleys before a tune and it's run just fine getting to the dyno.

 

[JEWC_Motorsports]

Damn dude congrats on the new head unit.