So i was running a tr55 gapped to 55 in my truck. A few weeks ago when it go cold I started noticing that it was cutting out up top but blamed it on the weather change and the tune since it was running fine before. I talked to several people who pointed me in the same direction. Thanks dr. thunder550, Nonnieselman, and Justin at bbp.

I went to swap plugs yesterday and started at 6:15, i had to stop at 6:40 to run and get a swivel cause my brother must have come over to borrow mine so i went and got a new on. I was done and driving at 7:20.

I went back with a tr6 gapped to 32 and my cutting out problem is gone!!!!!

Now i have one other problem/or blessing. Since it is 22 degrees here my boost is creeping. I have my 7lb spring in and can make 9 psi in first gear and in second and third it climbs to 13 or so. I know this is semi normal but that much different?

Seems like somthing might be causing boost creep so I'm going to do some reading but if ya have any suggestions let me know! Thanks

 

Spark issue won't cause boost creep. But yeah when I went to front mount I went with the TR6 at right at the same gap and didn't have any issues. When I was on the rear moutn I had the TR6 gapped at stock gap and it was fine. But when I stepped up i went with a tighter gap.

 

Mmmmmmm tasty New avatar I think!



Go buy a boost controller, ya cheap bastard!

 

The TR6's have always treated me well.

For whatever reason, I don't get any boost creep at all. Even with these colder temps (30-40F) It stays pretty rock solid at 10psi. BUT, I'm pretty sure I have quite a bit of backpressure in my crossover.

I would like to know as well, I guess. What anomaly causes the higher boost to not open the wastegate? Or does it open and there is not enough driving pressure to attain the flow?

 

how much boost were you making with your 7lb spring before?

 

map pressure was showing 9psi and my gauge showed about 8 give or take a little. I hope its just the weather cause it only spikes when im on a high speed run (on a closed race course obviously).
Im going to look everything over tonight and see if i might have a bad hose or somthing like that.

 

Cold weather = creep do to the air being more dense so there is more to compress

 

Yeah I installed the boost controller and the TR6's a while back it made alot of improvements I am running 8lbs on my 5.3 runs pretty good but I need a good two day dyno session by a turbo pro, I sure wish I knew what the hell I was doing with my HP tuners pro edition oh and I killed my LC1 last week when I was hooking up to my hp tuners.

 

What would cause creep just in 3rd? its crazy but boost is the same in first and second no mater how hard i push it or how slow/fast its going but in third over half throttle and it creeps up to 12 and stays there!

 

sounds like an rpm thing it seems like is usually set up to rep out a little!