MS4 idle tuning

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04-23-2008, 04:24 AM

Black_Tiger

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MS4 idle tuning

We are just finishing up installing the ms4 cam and some heads with 36 inj and 255 fuel pump Anyone have any tips or suggestions on idle tuning? thay Read 8 and 9 A/F and 20 Degree at idle ?

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04-23-2008, 06:10 AM

BLK02WS6

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Its gonna want more timing than that at idle - probably around 26*... And you are gonna have to get a wideband on it and lean it out. Idle airflow will need work as well...

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04-23-2008, 10:18 AM

Black_Tiger

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its a 98 camaro m6 with SD tune
any advice

Attached Files

ON THE CAR.hpt (441.8 KB, 100 views)

1998 STOCK TUNE FOR COMARO SS M.hpt (441.7 KB, 51 views)

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04-23-2008, 12:40 PM

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going to need to play with your RAF and need to lean it out at idle. when i had that cam that was what i needed to do. if you search for some threads about that cam here you will see a thread i started long time ago asking the same question