ftra, 85mm lid and maf installed. did it help? track results inside
03-09-2009, 09:33 AM
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ftra, 85mm lid and maf installed. did it help? track results inside make a long storry short i would run 12.0's and 12.1 and and hit 11.9 3 times.
well i added a ftra, fast toys lid and 85mm maf, went from a truetrack to a full spool and got a torque are relocation kit.
when i went 11.9 at 115 or 116 the da was around 0
went to the track yesterday and ran 5 12.1 and a 12.0 with the new mods at 114. but it was a 2500+ da.
so did the ram air help? i know ive had to add some more fure because its lean from 4k and up
well i added a ftra, fast toys lid and 85mm maf, went from a truetrack to a full spool and got a torque are relocation kit.
when i went 11.9 at 115 or 116 the da was around 0
went to the track yesterday and ran 5 12.1 and a 12.0 with the new mods at 114. but it was a 2500+ da.
so did the ram air help? i know ive had to add some more fure because its lean from 4k and up
03-09-2009, 10:52 AM
#3
make a long storry short i would run 12.0's and 12.1 and and hit 11.9 3 times.
well i added a ftra, fast toys lid and 85mm maf, went from a truetrack to a full spool and got a torque are relocation kit.
when i went 11.9 at 115 or 116 the da was around 0
went to the track yesterday and ran 5 12.1 and a 12.0 with the new mods at 114. but it was a 2500+ da.
so did the ram air help? i know ive had to add some more fure because its lean from 4k and up
well i added a ftra, fast toys lid and 85mm maf, went from a truetrack to a full spool and got a torque are relocation kit.
when i went 11.9 at 115 or 116 the da was around 0
went to the track yesterday and ran 5 12.1 and a 12.0 with the new mods at 114. but it was a 2500+ da.
so did the ram air help? i know ive had to add some more fure because its lean from 4k and up
Did you re-scale the MAF table?
03-09-2009, 01:58 PM
#6
Definitely "Make Sure" your tuner reworked the MAF table. Tuning the MAF table it not normally included in a Dyno tune. Otherwise you will have some A/F problems and your timing will be affected as well.
If you have the EFI data from your runs, take a look at your timing values and see how they compare to your previous runs before the 85mm MAF.
If you have the EFI data from your runs, take a look at your timing values and see how they compare to your previous runs before the 85mm MAF.
03-09-2009, 04:14 PM
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both 60fts are in the high 1.6 low 1.7
i dont have and data logs of the runs but the maf tables in my current tune are differant from my stock tune.
the da yesterday was +2500 and the other times was around 500 or less
i dont have and data logs of the runs but the maf tables in my current tune are differant from my stock tune.
the da yesterday was +2500 and the other times was around 500 or less
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03-09-2009, 04:27 PM
#8
That would be a very good improvement.
03-09-2009, 08:36 PM
#11
03-10-2009, 11:16 AM
#13
Looks to me that the MAF table needs modification above 8000 Hz. An 85mm MAF stops reading @ 11250. Your stock MAF reads up to 12000 Hz. The MAF table currently reads the same @ 11250 (g/s) as it did when scaled to 12000 Hz. Generally, a swapped stock to 85mm MAF table is step scaled in order to estimate the airflow previously measured from 11250 to 12000 Hz. IMO, there's more to gain by taking another look @ the MAF table. The table looks high for the first few scalings (idle stuff) & low above 8000 Hz.
I'd also go to an 85mm TB (Summit has them cheap).
03-10-2009, 11:51 AM
#14
Here's a MAF table that I think is a closer match to actual. The table is modfied above 8000 Hz. Whether you try it or not is up to you. It will only make your A/F more rich than it already is unless the PE table is adjusted. Need to know actual A/F during WOT to know for sure.
Do you have the A/F plot of your tune? The PE is commanding 12:1 which may be OK, as long as actual A/F is 12.9:1. This needs to be confirmed.
Do you have the A/F plot of your tune? The PE is commanding 12:1 which may be OK, as long as actual A/F is 12.9:1. This needs to be confirmed.
03-10-2009, 12:31 PM
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Stock I ran 13.1. I added the slp induction package, port / polished MAF and TB, and Fram air hog filter. After the induction package and MAF and TB I ran a 12.9.
First slip was against a 95 Impala SS, Second was against Denali Truck on Nitrous, and 3rd was against a stock 6.0 GTO manual.
First slip was against a 95 Impala SS, Second was against Denali Truck on Nitrous, and 3rd was against a stock 6.0 GTO manual.
03-10-2009, 08:06 PM
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i thought 98s maf didnt go as high?
i did have to change the pe table to make it more richer up top
idle does seam a lil lean
my throttle body is a stock ported unit "s3" from shanner
a/f is 13.0 and then over 5k it goes up to 13.5 but i added fuel over 5k to dial it back to 13.0
i did have to change the pe table to make it more richer up top
idle does seam a lil lean
my throttle body is a stock ported unit "s3" from shanner
a/f is 13.0 and then over 5k it goes up to 13.5 but i added fuel over 5k to dial it back to 13.0
Last edited by bad6as; 03-10-2009 at 08:12 PM.
03-10-2009, 09:37 PM
#17
i thought 98s maf didnt go as high?
i did have to change the pe table to make it more richer up top
idle does seam a lil lean
my throttle body is a stock ported unit "s3" from shanner
a/f is 13.0 and then over 5k it goes up to 13.5 but i added fuel over 5k to dial it back to 13.0
i did have to change the pe table to make it more richer up top
idle does seam a lil lean
my throttle body is a stock ported unit "s3" from shanner
a/f is 13.0 and then over 5k it goes up to 13.5 but i added fuel over 5k to dial it back to 13.0
98's don't. I didn't see where a 98 MAF was noted. Regardless, your MAF table scaling is off.
The 13.5:1 confirms that the MAF table scaling is off. Commanded is 12:1 & actual was 13.5:1 because more air was entering the engine than was measured. If you're currently @ 13:1, then you can leave everything alone. Just keep in mind that youre MAF table scaling is off enough (above 8,000 Hz) to cause a commanded 12:1 to be an actual 13:1 during WOT.
Don't know what an S3 TB mod consists of. Although, if it is less than 85mm, then would expect an 85mm to be an improvement. You'll have to re-scale again & verify A/F ratio @ WOT.
Bottom line is that @ 13:1, you're as good as she's gonna get without another mod. Saw that timing was as agressive as it could have been. VE looks good for normal driving. Other than the idle, the results are good.
03-11-2009, 01:01 PM
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i though it was the 98 coumputers that only went to 11250 and the others went to 12. but ill put the pe changes i made back and then use the maf table you gave me. you said the lower scale on the maf looked off too?