Originally posted by dlmrun2002
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Originally posted by roguetoaster View PostJust search "M42 chip" in the parts for sale section. First result is a Hamann chip for $100. It boasts the highest RPM increase, to 7350 RPM, of any I have seen, which is probably not a good thing on a stock M42.
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Originally posted by roguetoaster View PostExplanation or kidding?
Originally posted by roguetoaster View PostJust search "M42 chip" in the parts for sale section. First result is a Hamann chip for $100. It boasts the highest RPM increase, to 7350 RPM, of any I have seen, which is probably not a good thing on a stock M42.
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Originally posted by e30m3ochoa View PostWould you happen to know the part number for the chip cause so far I haven't had any luck finding any.
I've got the stock chip in the glove box. It is in a chip case. If it says Dinan on it maybe I could get the number for you. Besides that I wouldn't know the number. I do know I can rev up to 7.1k or7.2k. Will let you know maybe tomorrow..
dlm ny country
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Originally posted by dlmrun2002 View PostI've got the stock chip in the glove box. It is in a chip case. If it says Dinan on it maybe I could get the number for you. Besides that I wouldn't know the number. I do know I can rev up to 7.1k or7.2k. Will let you know maybe tomorrow..
dlm ny country
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Originally posted by ForcedFirebird View PostSome chip retailers just add 2-5 degrees of timing in the WOT maps and call it a "perfomance chip". Others actually tune all the maps. Some even go as far as just adding timing where the factory pulled it in peak torque to remove the "dip" in power, then raise the rev limiter beyond where it makes power - which neither is good for your engine (specially stock).
If someone were to buy a chip from a reputable manufacturer I would trust that some actual work and thought went in to the creation of the product. This is exactly why we all know that eBay chips are to be avoided.
Originally posted by ForcedFirebird View PostThat is rather high. Even 7100 is too high. My local friend took the performance chip out of his 318 track car as he had valve float issues twice, ruining two engines. I wrote him a chip using the stock limiter, but with better mapping for performance. The car has near 100hrs or racing, and the only issue since was a syncro failure in the transmission. Perhaps on the street, the engine wouldn't be as taxed if the owner was aware of the dangers.
Additionally, I have run a Mark D chip in my M42 powered street car for more than two years, regularly bump (but don't hover at) the ~7100RPM limiter (yes, I know I'm out of the useful power band).
For some reason, valve float does not seem to be a frequent or damaging problem on these two engines. Perhaps it's the people who are driving them, or the overall condition of the top end, who knows, but it has yet to cause valve interference.
In any case, it's important to point out that anyone who uses a chip with a raised rev limit should be aware that the possibility of catastrophic damage to the engine can occur on a stock valve train.
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