excuse me Bruce, but you are running 24 psi on pump gas? do you mean a sustained, wind it out in third gear 24 psi or something else?
Yes he does. His car is one of those "gone over EVRYTHING" and if theres a gain to be had, Bruce has found it. Running hard w/o detonation is simply knowing how the flame travels, what causes detonation and taking measures in engineering to prevent it. I believe he even posted his "combo" many times. Remove all burrs, radiius all sharp edges, keep a little tooth in the heads/intake/chamber. Stuff like that will get you further than bolt ons. Its just that bolt ons are easier.Originally posted by azgn
excuse me Bruce, but you are running 24 psi on pump gas? do you mean a sustained, wind it out in third gear 24 psi or something else?
what does your car run in the 1/4 with that tune? Maybe you have the secret to the universe, but call me a skeptic?
I routinely run 21-22psi with 19* of timing. If the car is set up, you wont hurt it. I run my car admittedly a little fat, but thats safer than lean. I did hurt it though when I didnt notice boost crept to 26#. ONly showed 6* KR on scanmaster...I'm sure SM missed a lot...which is why I dont recommend tuning by it, anyway, temp was creeping up fast and got bubbles in the overflow. Got my new motor on the way so I didnt bother doing the HG's. Any month now......Originally posted by MJRWOOD
Yeah what's up with that?
I met this older GN dude a few weeks ago at cruise night. He had an "old school" GN which was built maybe 10 years ago with all the hot stuff from the day, none of the parts were new or recent. He said he was running 22 PSI on 93 pumpgas and I went . To top it off he had no idea what the ignition timing was or even what knock retard was. My direct scan laptop freaked him out a little. He said "whatya need that for?"
I have to assume he probably never ever gets on it (super low mileage and very clean car).
Originally posted by Tom87GN
It sounds like my car runs the same as MJRWOOD's ride does. I believe everybody when they say that with 40's and a 307 I should be going faster. Now I just have to find out why.
INTERCOOLER, my chip is from Joe Lubrant, 26 degrees. My fuel filter only has about 3 tank fulls of gas / race gas through it. My sock is a newer non-collapsable style that came with the 307.
Should MJRWOOD and I be looking for kinked fuel lines????
Please report back when it doesn't fix your problem. I would like to hear what actually fixes it.Originally posted by MJRWOOD
Regardless of ET my car is out of fuel at ~ 100MPH and up. Last night made a run in the country with fuel pressure gauge on the windshield. At full boost the fuel pressure maintained 72-75 PSI throughout the whole run. As usual, she was popping at the top of third gear and Direct Scan showed third gear O2's in the 750's with lean pops dropping to the 600's.
That's enough screwing around for me. I'm going to at least 50's, maybe 55's and new inj drivers. Till then I'll dial the boost down until I can maintain flat 800+ O2's throughout a run.
Please report back when it doesn't fix your problem. I would like to hear what actually fixes it.
Originally posted by azgn
excuse me Bruce, but you are running 24 psi on pump gas? do you mean a sustained, wind it out in third gear 24 psi or something else?
what does your car run in the 1/4 with that tune? Maybe you have the secret to the universe, but call me a skeptic?
Start at the back and work your way to the front until you find the problem. If the 55's fixes it keep me posted.
Take them out and send them to Chuck Leeper for testing before putting out a bunch of wasted IMO cash.Originally posted by MJRWOOD
Doesn't "good" fuel pressure under load indicate that there is no problem with the fuel system? I've already checked condition the lines and installed a fresh new 340 pump and new filter. There's nothing wrong there.
The 009's may typically be capable of the required fuel delivery, however there may be an issue with one or more of my injectors. ie. weak coils, contamination, etc.
Another possibility is that I may be moving enough air in the top of 3rd to run low 11's, but just haven't executed a good pass yet (I know I haven't made a good pass yet!). MAF readings on T+ base setting are well exceeding 400g/sec. For what MAF readings are worth, that's a lot of flow.
Originally posted by azgn
Bruce, unless you are running a giant duration cam or pulling a bunch of timing at WOT, I do not see how you can run 24+ lbs of boost on 93 octane....or maybe you can, but not making any power?