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View Full Version : Maxing MAF what next....



Redline Motorsports
September 9th, 2006, 09:51 AM
I finally finished a VE tune on this 2000 F-body with that we did a 408 ProCharged motor in. The VE tuning worked out awesome and definately boosted my confidence in Auto VE tuning. :rockon:

After VE tuning I reintroduced the MAF and got it dialed in as best as possible. Mainly up to about 9000 hrtz. I then went back to the PE Modifier table and entered the desired AFR I wanted and through in one of my "starting" timing tables. I wanted to confirm the max values of the MAF as the AFR is going 10:0 as soon as the MAF is around 9800 hrtz. I tried leaning out the PE table but it didn't seem to make a dent into the AFR. It started at about 4K with only 4 lbs of boost.

I don't plan on spending too much time with this tune as I think its time to figure out the 2 bar custom OS stuff! My post was really to better understand the limits of MAF tuning. The car made 585 HP and 565 FTlbs on only 6.3 PSI and a 10:0 AFR. :Eyecrazy:

I'm I maxing the MAF? Also note the MAF hrtz between 4700 and up was between 10,500 and 12,437.....

Thanks

Howard

dc_justin
September 9th, 2006, 10:01 AM
CHeck B5001. The final row of that table will define the point that you max out the MAF... It's probably 12000hz.

Do you have Cat Converter Protection enabled? {b0701}

Redline Motorsports
September 9th, 2006, 02:57 PM
We'll if thats the case.....then the MAF is maxed! Still wondering why it is go 10:1 at high frequencys.

Yes Cat enable is disabled!

Black02SS
September 9th, 2006, 08:30 PM
You are using 100% MAF and nothing on the VE table at those RPMs. It appears to me that those values are just to high resulting in a rich condition. Better rich then lean. ;)

Redline Motorsports
September 10th, 2006, 01:37 AM
Time to start reading up on 2bar SD tuning..........Black...make sure your phone is on! LOL!!!

HT

Black02SS
September 10th, 2006, 01:43 AM
You do the same as I already tried calling you this morning.

Redline Motorsports
September 10th, 2006, 08:12 AM
Got your message. I got it when I got home from a couple 160 pulls with the ZO6 today! Boy is the air good today in the Northeast!

Call me when you get a chance!

HT