Anyone max their MAF table?
Anyone max their MAF table? I was just wondering, because I hit the highest cell in the MAF table the last time I went to the track. I dialed in the VE and MAF tables via wideband to be dead on at high rpms, and it says I'm flowing 51.49 lb/min or 390 g/sec (at 28 degrees timing). Any idea how much horsepower that would be (roughly of course)? I'd calculate it from 1/4 mile times/speeds, but my tranny started slipping and those numbers were useless.
Anyone have a link to a good horsepower calculator they'd share with me?
Thanks all
Anyone have a link to a good horsepower calculator they'd share with me?
Thanks all
it would be easier to figure out from injector duty cycle, injector sizing, and effective AFR. if you got good logs, we can tell you a lot about how healthy your setup is. I, for one, am very curious to see logs of a setup that is maxing out MAF, as i thought i've seen some big setups, but they haven't pushed it that hard yet.
log injectors, MAP, MAF, dynair, rpm, and we should be able to tell you more. in my sig you can find a link to a blog that has a spreadsheet that will tell you how good your VE is based on your fuel usage. also good for spotting intake tract bottlenecks
log injectors, MAP, MAF, dynair, rpm, and we should be able to tell you more. in my sig you can find a link to a blog that has a spreadsheet that will tell you how good your VE is based on your fuel usage. also good for spotting intake tract bottlenecks
I really wish I could post that for you right now, but I forgot my damn laptop at home tonite. And all my data is on it. I'll post the log file tomorrow.
Part of the reason I maxed it is I have a '98 ECM. And as you know, my MAF tables stop at 11,250 Hz. I used my wideband to dial in my VE tables, and have my MAF tables looking pretty good by comparing commanded WOT AFR with wideband AFR. I was running stock displacement, 11:1 compression with TSP race style LS6 heads, Delphi/Lucas 37# fuel injectors (I think 42.5 lb at 58 psi), I was pushing damn close to (if not) 7,000 rpms due to my tranny slipping, and according to my wideband, I was running between 12.8:1 and 13.0:1 AFR. The only thing I don't think I logged was dynair, due to the 24 channel limitation on HP Tuners. I had other things I wanted to record.
Part of the reason I maxed it is I have a '98 ECM. And as you know, my MAF tables stop at 11,250 Hz. I used my wideband to dial in my VE tables, and have my MAF tables looking pretty good by comparing commanded WOT AFR with wideband AFR. I was running stock displacement, 11:1 compression with TSP race style LS6 heads, Delphi/Lucas 37# fuel injectors (I think 42.5 lb at 58 psi), I was pushing damn close to (if not) 7,000 rpms due to my tranny slipping, and according to my wideband, I was running between 12.8:1 and 13.0:1 AFR. The only thing I don't think I logged was dynair, due to the 24 channel limitation on HP Tuners. I had other things I wanted to record.
Shoot, I can't seem to upload it to my webspace. Can you PM me your e-mail address so I can mail you the file. It's only ~56kb. You should be able to view it ok with your default config. About the only addition to mine is the dynojet wideband.
Sweet, I'll take that with a grain of salt, but it's good news!
515 fwhp x .82 (losing ~18% thru A4) = 422 rwhp
I figured pretty close to that, though I'm probably losing a few more rwhp thru the Strange 12 bolt and 3.73's. Last year I was using 320 g/sec of air and was making 346 rwhp (with bad knock sensors) on a portable dynojet. Now I'm using 390 g/sec.
390 / 320 = 1.219 (constant), now 346 rwhp x 1.219 = 422 rwhp
That's awesome. That's 8 rwhp more N/A than I made last year using my NOS 5177 kit.
Now to get it back to a real dyno and get some concrete numbers and work on the nitrous tune.
515 fwhp x .82 (losing ~18% thru A4) = 422 rwhp
I figured pretty close to that, though I'm probably losing a few more rwhp thru the Strange 12 bolt and 3.73's. Last year I was using 320 g/sec of air and was making 346 rwhp (with bad knock sensors) on a portable dynojet. Now I'm using 390 g/sec.
390 / 320 = 1.219 (constant), now 346 rwhp x 1.219 = 422 rwhp
That's awesome. That's 8 rwhp more N/A than I made last year using my NOS 5177 kit.
Now to get it back to a real dyno and get some concrete numbers and work on the nitrous tune.
