Originally Posted by themyst

OK so a fully modded catless C6 Z06 puts down 409whp which is far below stock, I go after him, put down 325whp in a 135i with Procede V4, downpipes, intake, methanol, C63 puts down 359whp after that, so you're saying a bone stock C63 with the examples given is not reading a bit on the high side? You're an AMS vendor, you design a well-received FMIC in our world, I am damn certain you know what the N54 platform is capable of and respect your input. Being that there was a 20-30 minute break between myself and the Z06, could the dyno have been recalibrated in between? No one knows. I was at that dyno, no RPM reading, no A/F, the dyno sheet read up to 9000 RPM, who knows what happened on that dyno.

Nothing was wrong with that Z06 as it was putting down +/- 5whp on each of his three runs. I completely understand your point of DDs reading a bit on the low side, but based on the said examples, either the dyno was recalibrated after the Z06 and 135i, or C63 on this dyno is not stock. STOCK C63's on a DYNOJET are in the 370-380 whp range, the fully modded Z06 is only +50whp on a supposedly STOCK C63? I don't think so.

Originally Posted by Jons95c36amg

So can you explain why the modded Z06 put only 410whp on DD? On dynojet they put out 420+whp stock. He had intake,headers which is good for 50whp.

Originally Posted by AMMO1000hp

Those are good numbers for stock on a DD for sure. I only put down 333whp stock on 91 octane (on a DD) for comparison and was told that was high at the time.

What fuel were u using at the time?

Originally Posted by Jons95c36amg

BP 93

Originally Posted by EUGENE-Taiwan

that makes a big difference

Originally Posted by Jons95c36amg

Its either 93oct or 89. No 91 around here. The gas door says 93min.