Hey guys, I've finally bought myself an MPS 6 after months of debating whether to get a liberty gt or the MPS. I've only had this thing for 2 weeks and I think I made the right decision, its a beautiful car.
The car came with a sure v2 intake with TIP, otherwise stock sitting on 99,000km. A couple of days ago I bought the COBB AP v3 and ran the Stage 1 Sure v2 + TIP 98 tune on it, and it really seemed to wake the car up, felt alot more powerful.
I ran a few logged WOT runs in third gear and I noticed the psi wasn't hitting target boost at all, it was only holding about 14psi, sometimes even tapering down to 13. The car seems to go alright otherwise, don't notice any other issues.
I never ran any logs on the stock tune, but now I'm thinking before the flash it may not even have been hitting anywhere near 14 psi because the car right now feels alot quicker than stock. I thought it was supposed to hold 14 psi stock easy so i'm confused as to why its not even getting close to the 16.5 psi its supposed to hold all the way to 6000rpm on stage 1.
I've gone through this whole forum probably 3 times and still can't seem to work out what could be doin this. Today me and a mate blocked off the BPV to see if that was the issue, however it still only boosted to 14 psi.
I have uploaded a log of the best run it had where it held 14 psi quite well, I hope someone can shed some light on the matter, would be much appreciated.
Ive read somewhere about not boosting it for 20km after a tune so it can fuel trim or something? But i don't understand what that's all about, my previous 2 turbo cars was an s14 and xr6 which were completely different in the tuning department.
Cheers!