Wont go into boost?
Wont go into boost? Sup guys, having a little issue here. I recently changed my mid/rear mount on3 76mm turbo setup over to a front mount turbo setup while upgrading to a T6 1.32 a/r S475 . I am currently still on a base E85 tune that was done by a vendor here that has worked awesome for the most part with my old setup. I have hit 10-13lbs of boost with that extra safe tune without an issue with very close monitoring. (No knock detection and AFR was good). This was with my NON-INTERCOOLED mid mount on3 76mm setup..... Fast forward 3 months later. I upgraded to a T6 borg warner S475 with a 1.32 a/r with a custom schdule 10 log manifold setup, running E85 and an intercooler. First time out, trying to get into ANY boost AT ALL it stuttered so bad. I only have a 4psi spring in my precisiom 66mm wastegate... I also noticed that when trying to get into boost that the pcm was pulling out 7* because of Knock detection. I checked over the entire setup for leaks and threw in a set of new TR6 plugs, same thing...I really have a hard time believing that I cant utilize 1-4lbs of boost by just swapping to this setup and upgrading to an S475... Fuel pressure looks good.. im stumped.
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Sup guys, having a little issue here. I recently changed my mid/rear mount on3 76mm turbo setup over to a front mount turbo setup while upgrading to a T6 1.32 a/r S475 . I am currently still on a base E85 tune that was done by a vendor here that has worked awesome for the most part with my old setup. I have hit 10-13lbs of boost with that extra safe tune without an issue with very close monitoring. (No knock detection and AFR was good). This was with my NON-INTERCOOLED mid mount on3 76mm setup..... Fast forward 3 months later. I upgraded to a T6 borg warner S475 with a 1.32 a/r with a custom schdule 10 log manifold setup, running E85 and an intercooler. First time out, trying to get into ANY boost AT ALL it stuttered so bad. I only have a 4psi spring in my precisiom 66mm wastegate... I also noticed that when trying to get into boost that the pcm was pulling out 7* because of Knock detection. I checked over the entire setup for leaks and threw in a set of new TR6 plugs, same thing...I really have a hard time believing that I cant utilize 1-4lbs of boost by just swapping to this setup and upgrading to an S475... Fuel pressure looks good.. im stumped.
Is knock detection set up correctly, and have you actually listened for any strange noises that might be causing any false detections ?
SD/MAF ? Has anything changed there ?
we had the same problem with a truck we tunned.it would shutter so bad and not make any bost.come to find out it was way rich.leaned it out and it was a animal.something to check anyways
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