I use 5 Star tuning, and Ive been running the 93 perf tune for like a year and a half. I had an original tune (rev1), then a year later I got an update (rev2), both tunes were aggressive, and about 23 psi peak boost. I went back to stock for a day or two for a dealer trip to get headlights repaired, a third plastic oil pan due to leaking, and a recall on insulation in the b-pillars.
I flashed back to rev 2, but it has snowed like crazy here lately so never really got on it. All the flashing of tunes made me think to ask for an update and I got rev 3. it finally stopped snowing, and I happed to pass a car and the truck was slow as shit on the top end. Do some pulls and notice its boosting like 17 psi, basically stock. go back to rev 2 and it is the same.
When I got my rev 3 tune, they asked if the dealer had flashed my ecu, I said I didn't think they did, as nothing was engine/ecu related.
Is it possible that the dealer flashed my ecu and that is causing my issues? It seems like SOME sort of tune is getting flashed because the trans is not shifting to 10th gear at 45 mph like stock, but it definitely isn't as strong as before, and the boost is clearly 5-6psi lower.
I don't believe it is a mechanical issue, as I have no CEL's, and you would hear a boost leak that big.
5 star has been little to no help, and I feel like after phone calls and emails I am still trying to convince them something is even wrong. they are now not returning my phone calls or emails.
Help is appreciated!
I flashed back to rev 2, but it has snowed like crazy here lately so never really got on it. All the flashing of tunes made me think to ask for an update and I got rev 3. it finally stopped snowing, and I happed to pass a car and the truck was slow as shit on the top end. Do some pulls and notice its boosting like 17 psi, basically stock. go back to rev 2 and it is the same.
When I got my rev 3 tune, they asked if the dealer had flashed my ecu, I said I didn't think they did, as nothing was engine/ecu related.
Is it possible that the dealer flashed my ecu and that is causing my issues? It seems like SOME sort of tune is getting flashed because the trans is not shifting to 10th gear at 45 mph like stock, but it definitely isn't as strong as before, and the boost is clearly 5-6psi lower.
I don't believe it is a mechanical issue, as I have no CEL's, and you would hear a boost leak that big.
5 star has been little to no help, and I feel like after phone calls and emails I am still trying to convince them something is even wrong. they are now not returning my phone calls or emails.
Help is appreciated!
