Re: E34 M5 Chip recomendation (archive)

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Long time no hear, except my constant attack of joke emails. I have to agree with Benster, the D'sylva chip definately made the powerband come on a lot smoother, along with the increased idle that make the lumpy idle a little softer. It DEFINATELY gave a power increase, but I haven't dynoed it yet either to be able to confirm a 39HP increase. I have no comparison of the others to be able to give a biased opinion, but I know what I feel is a lot better than stock.

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!

I believe both boast a 39hp increase... although I am not sure if this is accurate or not.

I would look into the Mark D Sylva chip, his chip has been tried and tested by many, with both the Dinan chip and the Conforti Chip.... and they have kept the Sylva chip b/c it runs better, and gives more power.... I will also mention again that I am not sure of the gains that these companies advertise, 39hp seems like an awful lot for a $200 computer chip... but you never know.

Does anyone want to recommend the best chip to use in a '92 E34M5? Stock HP is 311. What are the claimed HP increases? Dinan? Jim Confort (sic) others? Please advise.
Dave H

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