Grantelli MAF vs. SLP 85mm MAF
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Joined: Nov 2001
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From: Chi-Town, IL
Re: Grantelli MAF vs. SLP 85mm MAF I got the SLP 85 mm on my car and the car runs good, Tom at Speed Inc. has had his guy tune a bunch of cars there and just by adding the 85mm MAF each car picked up 10-12rwhp...that could be just the programming, but all the people added that SLP maf...
On The Tree
Joined: Nov 2001
Posts: 103
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From: Fowlerville, MI
Re: Grantelli MAF vs. SLP 85mm MAF I sold mine a couple weeks after I bought it, and put the stock one back on. There was no performance improvement, and it just set off the SES light. I think your money would be better spent somewhere else.
Re: Grantelli MAF vs. SLP 85mm MAF The stock MAF does not currently seem to be the bottleneck in our intake tract (at least for stock displacement H/C cars) The HP improvment seen is usually due to the altered fuel curve induced by the aftermarket MAF. This is essentially part of what's done in custom programming. That's why some cars see an improvment and some see a loss. It depends on your combination. I believe its money that could be better spent elsewhere...
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Shane
<small>[ April 11, 2002, 11:45 AM: Message edited by: XtraCajunSS ]</small>
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Shane
<small>[ April 11, 2002, 11:45 AM: Message edited by: XtraCajunSS ]</small>
On The Tree
Joined: Dec 2001
Posts: 126
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From: Sherman Oaks, SFV , CA.
Re: Grantelli MAF vs. SLP 85mm MAF I tried both MAFs and had great results with each. I had the GMS on my previous 98 Z28 and it definitely improved the cars performance. I never actually saw dyno numbers to see how much of a gain it made but it was noticeable. The same goes for the SLP 85mm. I dyno'd my stock 00 before and after with just the SLP MAF and it made 10 HP more than the stock MAF.
It's a debate that will go on because each car reacts differently to each MAF. For some cars it will help and some will hurt its performance depending on mods. I've found that a MAF translator significantly helps tune a rich or lean condition when using either MAF. The idea to increase the size of the MAF is to let more air pass through freely which supposedly should produce more power. When you go with that line of thinking and seeing plenty of people are stepping up to the "larger volume" LS6 intake than a stock LS1 intake its hard to believe that a smaller or stock size MAF produces more power than a larger size MAF.
That's my 2 cents!
It's a debate that will go on because each car reacts differently to each MAF. For some cars it will help and some will hurt its performance depending on mods. I've found that a MAF translator significantly helps tune a rich or lean condition when using either MAF. The idea to increase the size of the MAF is to let more air pass through freely which supposedly should produce more power. When you go with that line of thinking and seeing plenty of people are stepping up to the "larger volume" LS6 intake than a stock LS1 intake its hard to believe that a smaller or stock size MAF produces more power than a larger size MAF.
That's my 2 cents!
Re: Grantelli MAF vs. SLP 85mm MAF The real issue with the MAF's is that they really need to be tuned. It's obvious that the larger the better in this department. The MAF is just a obstruction and only hurts performance when it misreads what is actually going on.
The computer calculates the amount of air going thru the MAF to the engine using the area that was given originally. When we de-screen, port or enlarge the MAF then we seem to get some problems because the estimated air and the actual air are not the same, we get more air, therefore the car will not add enough fuel and leans out the car to much.
The MAF is a great idea with tuning or LS1 Edit. If you are going to do that you might as well get a ported T/B too.
The computer calculates the amount of air going thru the MAF to the engine using the area that was given originally. When we de-screen, port or enlarge the MAF then we seem to get some problems because the estimated air and the actual air are not the same, we get more air, therefore the car will not add enough fuel and leans out the car to much.
The MAF is a great idea with tuning or LS1 Edit. If you are going to do that you might as well get a ported T/B too.
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Launching!
Joined: Dec 2001
Posts: 237
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From: Raleigh, NC
Re: Grantelli MAF vs. SLP 85mm MAF I think you guys are missing a MAF for this comparo. How can you overlook the Pace ls6 MAF. You can get it calibrated to work on your vehicle, and the price is just about right also.
Jay
Jay
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Re: Grantelli MAF vs. SLP 85mm MAF I had an SLP on my 99 Z28 and I think it helped but I know it made the car run a little bit leaner. I didn't ATAP, but with the stock MAF it threw a code twice a week for running rich. With the SLP, I never had that code again.
I am going on the dyno this weekend with my 02 Hawk, and I'm going to swap the MAF's and see if there is a difference (if there is time at the end of the day). I'll let everyone know if I see anything interesting.
-Geoff
'02 Hawk #646 - no mods YET!
I am going on the dyno this weekend with my 02 Hawk, and I'm going to swap the MAF's and see if there is a difference (if there is time at the end of the day). I'll let everyone know if I see anything interesting.
-Geoff
'02 Hawk #646 - no mods YET!