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Old 09-23-2006, 12:41 PM   #1
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70mm maf and injectors

i have a 70mm maf and injectors could i run these with out a new tune???


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Old 09-24-2006, 12:13 AM   #2
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...i know next to nothing, but I think with new injectors comes slightly altered fueling. 'I guess that can mean that your engine might run richer (???). So, a tune would probably be best.
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Old 09-24-2006, 09:28 AM   #3
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The short answer is NOPE, NO WAY.

The tune is calibrated to the MAF and the current injectors. Changing either or both will not run well, if at all.

Unless you are FI, there isn't much to be gained by changing the MAF or injectors, either. The stockers are plenty big for the application.
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Old 09-24-2006, 10:21 PM   #4
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well the thing is i am puting a jrsc on but in the meen time i wanted to put the injectors and the maf on so i did and its actually running really good!!
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Old 09-28-2006, 01:24 AM   #5
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Do you have a wideband AF meter?? You might want to see how rich/lean you are running.. in any case, I would definitely get in touch with a local speed shop that can get you setup with a custom flash to make the mose of your parts.
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Old 09-28-2006, 08:06 AM   #6
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Quote:
Originally posted by kylebal
so i did and its actually running really good!!
As it should if the calibration done to the MAF is correct it "should" run just like the stock injectors and MAF

I do recommend you checking the AF as well as to make sure your closed loop hasent failed and your running around in open loop

A recalibrated MAF also slightly alters the timing as well so just because it is running with it installed may not mean it is safe

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Old 09-28-2006, 08:11 AM   #7
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Yeah running it lean it will feel like it has more power though it could damage the motor. But if the MAF is calibrated to the injectors then it could be aright like Tom says.
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