I think I have a little bit of both going on.
Often times when I floor the pedal, the boost will shoot from 0 straight to 26-27 psi or so before backing off to 25. The fuel pressure gauge (which is just under my boost gauge) has shown a quick spike to 69-70 psi before backing off to 67-68.
Initially I had boost set at 23 lbs but the addition of a Dutt neck IC gave me a few extra lbs and I never did back it off b/c I didn't see any knock and it was summer time.
However as of recently (as of the late fall/winter) I've encountered some knock issues that I wasn't sure if they were false or real. Before this I was running the typical Scanmaster with the slow 2.1 chip. I'd keep an eye on things but then the Caspers knock alarm started talking and the Scanmaster would start showing numbers on the screen.
I finally spent my money on a powerlogger and then got myself a lap top to log what was going on. I found that as I'd romp the pedal it would show I would start off at 21-22 psi of boost, then eventually I'd get more and more boost, finally topping out at 27.5. That's scary.
And to add to that it seemed at WOT the boost was all over the map from 21 psi to 27 psi. Why this is I'm not sure but I'd love to know. Maybe the 3 bar map sensor that came with my Alkycontrol kit is reading funny?
Someone here claimed they thought it was boost creep. I don't believe my wastegate hole is ported. I have read the fix is to take a Dremel and bore the hole to be somewhere from 1/8 to 1/16 of an inch smaller than the wastegate puck itself....and that you can use the carbon build up as a guide. Must the turbo be removed to do this?
And how do you go abouts curing boost spike?
My objective is I nail the gas and it goes to 24 psi (what I've read is the brightest a TE-60 shines on stock heads) and stays there....not decrease (unless I let off the pedal) or increase. (unless I manually crank up the boost)
Thanks in advance.
Often times when I floor the pedal, the boost will shoot from 0 straight to 26-27 psi or so before backing off to 25. The fuel pressure gauge (which is just under my boost gauge) has shown a quick spike to 69-70 psi before backing off to 67-68.
Initially I had boost set at 23 lbs but the addition of a Dutt neck IC gave me a few extra lbs and I never did back it off b/c I didn't see any knock and it was summer time.
However as of recently (as of the late fall/winter) I've encountered some knock issues that I wasn't sure if they were false or real. Before this I was running the typical Scanmaster with the slow 2.1 chip. I'd keep an eye on things but then the Caspers knock alarm started talking and the Scanmaster would start showing numbers on the screen.
I finally spent my money on a powerlogger and then got myself a lap top to log what was going on. I found that as I'd romp the pedal it would show I would start off at 21-22 psi of boost, then eventually I'd get more and more boost, finally topping out at 27.5. That's scary.
And to add to that it seemed at WOT the boost was all over the map from 21 psi to 27 psi. Why this is I'm not sure but I'd love to know. Maybe the 3 bar map sensor that came with my Alkycontrol kit is reading funny?
Someone here claimed they thought it was boost creep. I don't believe my wastegate hole is ported. I have read the fix is to take a Dremel and bore the hole to be somewhere from 1/8 to 1/16 of an inch smaller than the wastegate puck itself....and that you can use the carbon build up as a guide. Must the turbo be removed to do this?
And how do you go abouts curing boost spike?
My objective is I nail the gas and it goes to 24 psi (what I've read is the brightest a TE-60 shines on stock heads) and stays there....not decrease (unless I let off the pedal) or increase. (unless I manually crank up the boost)
Thanks in advance.
