Ways to combat boost creep Options

[6G94celica]

Ok so before my car died my boost gauge at the most i ever noticed read about .9 bars. calculated thats about 13 psi. i bought an upgraded ct26 with a larger compressor wheel from brashboy on ebay. im not sure what the wastegate is set at but this seems really high. i dont want to wreck anything internal and only want to run about 8 or 9 psi. also i have a custom 3 inch exhaust that i personally built with a high flow xlerator muffler with a single 3" inlet and dual 3" outlets. i know im running some major boost creep and am wondering how best to stop that and add some backpreassure to the turbo to slow freewheel.

[stephen_lee]

your only hitting 6psi
thats scary haha
is your knock sensor hooked up??
did you do that red/green LED knock sensor?
even if you have a speed sensor code, if should only throw the ecu light after a few minutes of driving.

[DEATH]

even if you have a speed sensor code, if should only throw the ecu light after a few minutes of driving.

That's exactly how it does. It won't throw a code at all either driving or just letting it idle for a long while and then checking the codes [or on the gauges obviously]. If I get up to 55-60mph [judging by RPM] it'll throw that one code.
I haven't been freaking about this issue cause I've been busy tracking down other issues [Ooh I've got a horror story I'll share with you via PM - I about fell out when I found this one]. I've been systematically attacking large portions of the car, disassembling them and putting them back together the way Toyota intended. Once I've got everything 100% then I'll worry about turning up the boost - when I know it's safe. My AEM Wideband should be here today or Mon - that'll help with my peice of mind and I wasn't about to turn up the boost before I installed that and knew it was working well.

did you do that red/green LED knock sensor?

It's on the list. Got the parts and the write up in the garage already.

How's the turbo look? Fins Okay? No Play? Could the waste gate be stuck open a little? It HAS to be some kind exhaust side bugaboo keeping your boost way down....

Beautiful. I looked at it and then had it looked at to double check when I had the engine apart for the rebuild. It's not leaking, very little play, the wastegate is shut nice and tight.
*Knock on every single peice of wood surface in this office*
I would think perhaps the Tvsv is probably still disabled from when it had a MBC installed before? That was my thinking last night as I was mulling some of this over.


This post has been edited by DEATH: Jun 6, 2008 - 9:20 AM