05-04-2022, 03:17 AM | #1 |
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Drives: BMW F10 M5
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Stage 2 Tune - AFR, IAT, water and oil temps
Hey all I have a fully straight piped stage 2 tune and I had some questions with what others may have experience or they can just shed some light on a few things:
- I have a cold air intake and my temps run about 30-40 degrees higher than ambient and I don't have the stock numbers as I didn't have the tune to measure it but I know typically ideally the IAT should be about 10-20 degrees above ambient… what do you all think? - the AFR is always steady and good at WOT at around 14.7 consistently; however, when letting off the gas it leaks up to in the 20-27's is this an issue? I don't know why it runs lean in that matter Thanks,
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2013 BMW F10 M5, Moonstone Metallic, 700whp, stage 2 tune, fully straight piped - catless downpipes - resonator delete and fabspeed muffler delete, cold air intake and many more cosmetic mods. | '92 525i (long gone) | '02 Dinan M5 (sadly gone) | '06 Dinan M3 (also sadly gone)
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05-05-2022, 11:25 AM | #3 |
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Thats lean. You might want to check fuel trims and see if they are high,
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05-09-2022, 07:02 AM | #4 |
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Drives: BMW F10 M5
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OKay I have figured it out... looks like I spoke to Terry at Burger Tuning and I still need to run a log, but basically when you let off the gas there is no more fuel coming into the injectors or it has those readings but as you said it is normal once I am driving or onto the gas... Thanks for the response... The AIT I think is just going to be the relationship to the engine just being hot with the turbos mounted on top.
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2013 BMW F10 M5, Moonstone Metallic, 700whp, stage 2 tune, fully straight piped - catless downpipes - resonator delete and fabspeed muffler delete, cold air intake and many more cosmetic mods. | '92 525i (long gone) | '02 Dinan M5 (sadly gone) | '06 Dinan M3 (also sadly gone)
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