MS4 idle tuning

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Apr 23, 2008 | 04:24 AM

Black_Tiger

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Staging Lane

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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 ?

Apr 23, 2008 | 06:10 AM

BLK02WS6

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From: on the dyno tuning in MD

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...

Apr 23, 2008 | 10:18 AM

Black_Tiger

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Staging Lane

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its a 98 camaro m6 with SD tune
any advice

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ON THE CAR.hpt (441.8 KB, 101 views)

1998 STOCK TUNE FOR COMARO SS M.hpt (441.7 KB, 54 views)

Apr 23, 2008 | 12:40 PM

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TECH Senior Member

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From: Texas

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