maf reading low at wot Don't post much but here goes. I started tuning my car with hp tuners. Got ve tables so I'm with in 3% on fuel trims. Getting ready to start on maf table. But I noticed my maf hz was little low. At wot it was only reading 8900. So it was causing my timing to pull off a low air mass/ cylinder reading.. like .49g. So it was pulling 31° at 5000 rpm. It's also cutting my fuel back because it thinks it's not getting much air. Cleaned maf and filter no change. Should I continue with maf table tuning or keep investigating why maf reading is low? 99 z28 auto |
Good job tuning your VE tables and noticing that the MAF frequency was way low. Many MAF failures are reported here; you like need a new one. Probably best to search for the a good price on an OEM replacement. |
my C5 has an 85mm MAF. Recently switched to an unscreened unit. Peak hz at WOT is 9200 Cyl airmass is .9 g/cyl Can you post the tune you are using for MAF only tuning? |
1 Attachment(s) I done a scan with maf disabled , sd. got down to .71g/cyl. |
Thanks, I just wanted to check to make sure you are in MAF only. Yours is the small MAF, so I agree you should try another one. Shouldn't be too hard to find a used one. Ron |
If yor VE is that close you could just eliminate the maf as well rather than buying another one. |
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