Recent content by Josh Sulsberger

Backpressure is the reason why exhaust and intake mods are done first. To create boost, the turbo has to overcome whatever backpressure is in the system first, hot or cold side. Making 10lb boost on stock equipment is not the same as 10lb on a low backpressure system, the turbo will actually...

Valve stem seals might give you this symptom also... Did you replace them when you did the HG? Daddycat--I'd really leave that to a shop...

If it's just an upgraded CT, you should still be running the stock wastegate actuator. It will still open at the same time as the stock setup, which is something between 5-8 psi (6.8 maybe?). The flow at this level may be a little different, and the lag may be a little different, but I...

Probably thought of this already, but was the key turned all the way back? As cars get older, the keys don't always fit as tight as they used to and will let you take them out without returning to the proper position. The keys used to actually rattle out of the ignition on my old '88 pickup if...

Maybe I explained it funny... The numbers posted from the #2 test are just the limit values for pass/fail, so besides the fact that my car measured less than these designated values, we have no new data from the test. NOx and CO may have gone up/down or stayed the same, as long as it's less...

:burnout: :burnout: Results are in... Thanks to all that contributed to getting my Supra back on the road (legally!) Your input was appreciated and valuable!!! VIP report only provides measurements when a vehicle fails any portion of the test, so I have no idea what my readings were this...

Found a pic on SM of some dude's whole exhaust, so based it off that. Seems to me that boost builds a little quicker and drops off a little slower, so maybe there was a little leak. I'm thinking it's retest time. Will post results good or bad sometime this week! Thanks and wish me luck!

If you've got no spark on all six, I'd check the ground coming off the coilpacks.

Signals/samples look good. IC piping yielded some potential problems: Some type of oxidation building up on the union between the two turbo discharge to IC pipes. Cleaned it up best I could, but there was lots between the rubber and the pipe, don't really know if it was airtight or not. Also...

I'm thinking that my next move is to put the original cat back on and retake the exhaust temps. It should still be operational. If I see a big change, I'll retest. Otherwise, I guess it's time to pony up for a new one... JJ-Did you want me to get a frequency on the Vf signal? I've got a...

Sorry if I mis-interpret you Nick, but given the data, you're thinking cat? Again, thanks to all that have contributed.

OK new data collected with thermocouple: In 300F Body 350F Out 480F That makes more sense...but good enough?

I think we've got some laying around in a drawer at work, the kind that you can attach to a DMM, right?

Here's my thermometer:http://www.sears.com/sr/javasr/product.do?pid=03482327000&vertical=Sears&BV_UseBVCookie=Yes I took the measurements at "point blank" range, but still noticed that reading depended on angle I took...

Did the temp check again after the drive but results didn't match format we were hoping for: ~375F in ~250F body ~375F out I took all measurements between the flanges of the cat this time, last time it was downpipe/body of cat/exhaust and the differing materials may have given bad data...