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Gideon33W · 04-11-2017, 02:03 PM

D17a1 correct? Lemme poke around. You could also check prices on rockauto.com

I like the idea but it might be more value to source a D17a6 lean burn. Actually, you might be able to bolt on the head and use the VTEC-E ecu to your D17a1.

Ultimately, E85 has lower energy density so you end up using a lot more fuel (25% on average) to achieve proper AFRs. The power boost from the higher relative octane rating wont result in much that translates to economy. Especially not in that motor.

You'll see better gains by bumping the compression. The D17a1 is 9.5:1 vs the D17a2 (vtec from the EX) and the D17a6 (vtec-e from theHX) at 9.9:1. The higher relative octane detonation fighting powers of e85 is far more handy with a higher CR to take advantage of it. Serious MPG and power gains could be had by cracking open your motor and going with a rod/piston combo getting you around 10.5:1.

Sorry, just kind of free thinking on the topic, haha.

04-11-2017, 02:03 PM	#2 (permalink)
Gideon33W EcoModding Lurker Join Date: Apr 2017 Location: Sierra Vista AZ Posts: 11 Thanks: 1 Thanked 0 Times in 0 Posts	D17a1 correct? Lemme poke around. You could also check prices on rockauto.com I like the idea but it might be more value to source a D17a6 lean burn. Actually, you might be able to bolt on the head and use the VTEC-E ecu to your D17a1. Ultimately, E85 has lower energy density so you end up using a lot more fuel (25% on average) to achieve proper AFRs. The power boost from the higher relative octane rating wont result in much that translates to economy. Especially not in that motor. You'll see better gains by bumping the compression. The D17a1 is 9.5:1 vs the D17a2 (vtec from the EX) and the D17a6 (vtec-e from theHX) at 9.9:1. The higher relative octane detonation fighting powers of e85 is far more handy with a higher CR to take advantage of it. Serious MPG and power gains could be had by cracking open your motor and going with a rod/piston combo getting you around 10.5:1. Sorry, just kind of free thinking on the topic, haha.