Re: Mark D'Sylva chip for '91 M5 is available. Inf (archive)

I have owned both a Dinan and a JC chip. I have also had the opportunity to help Mark D'Sylva test his chip as well.
Bottom line is that YMMV (your milage may vary). My M5 with the Dinan chip did "seem" to perform better that stock. I purchased the JC chip out of curiosity. I dynoed the JC vs Dinan in my car and the dyno showed the Dinan to perform better. I have had people dispute these results with me. Again, this was in MY CAR.

I used Mark's test chip for almost a year. I did not get a change to dyno it against stock or Dinan, but I did enjoy the "smoothness" of the acceleration feel of the chip. The Dinan is sort of an "all or nothing" acceleration depending on the RPM range.

I would recommend that if you have the luxury of trying more than one chip, do so. Neither the Dinan or the JC chip gave me a 39hp increase I can guarantee that. Both had different "feel" from stock and from each other. It is like buying shoes. Gotta find a good pair that just "fits".

My $0.02. For what it is worth, I am keeping my Dinan AND buying one of Mark's chips as well. Mark's chip is very smooth and quick. I prefer it much more for daily driving. The Dinan has a slightly lower idle which makes a nice deep rumble tone which sounds great for public appearances!

-Benster
1991 M5

There is more info on the Sylva chip at
http://groups.yahoo.com/group/bmwe34m5

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Matt

Just received word that a chip for E34 M5s is now available from Mark D'Sylva. Is there any info or experience on this chip or the seller? Not much from Google about this chip. Thanks.

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