Originally posted by Hracer:
How come the "generally accepted" IT power increase has to be used for the EX with the d16a1 motor, while it’s ok quoting 120 whp for the d16a6 crx motor? (I hope I got those engine codes right!) Either stick to the "generally accepted" ratio for both in order to come up with a more equal estimate, or assume the d16a1 EX motor as the same IT power increase potential as its cousin, the CRX Si motor, yielding about 141 whp for the EX.


My math, which could be wrong, came up with a increase from stock quoted power yeilding 152.40 HP.

I spoke to a national Honda shop who suggested that the Honda drivetrain was typically more efficient than the average, so using a figure of roughly 14 to 15% resulted in my estimate of 132 WHP.

I quoted 120 WHP because that is the number I've been quoted by CRX owners. Should I beleive it? I don't know.

If I knew someone with a developed EX, and I had asked them, I would have used that information as well.





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Jake Gulick
CarriageHouse Motorsports
ITA 57 RX-7
New England Region
[email protected]