D15B 3 stage VTEC swap

[rrathjen]

I am considering doing a swap in my 89 honda crx, I am going to buy the original ECU for it the p2j I am unsure if I should buy an obd2 wiring harness or use the original obd0 wiring to wire up the p2j ecm. Should i convert the whole engine bay to obd2, I am wanting to use the engine for its intended purpose for fuel savings not power.

 

[RoughKnight]

the 3stage d15b is obd2, so yes you should start your 'conversion.'

 

[78civic]

Gas savings?? You should just rebuild another d15 or the one that's in your car. Heck, i'm not easy with mine and I still get 32+ mpg.
I TRIED to be easy and got 38+..

Long ago, I rebuilt a d15 in a 89crx and got close to 36 with a engine that wasn't broken in yet. STOCK w/Port and polish and was at 82hp @the wheels.
It was SOO quiet that I'd have to rev it at a light to see if it was still running. BUT, I sold it.

E

 

[RoughKnight]

^... I'll stop you before you go on...

The d15b is notorious for its 'lean burn mode,' which can get up to 40-60mpg by crusing at about 60kph. So yea, d15 is nice, having the d15b with vtec-e makes it all fun at top and and gas savings down low.

 

[91civisedaner]

why not get a D15z1??? it's a vx motor vtec-e,the vxs got like 50+ mpg its a obd1

 

[PuddleSkipper]

Why not stick a 1992 - 1995 Civic VX motor in it and get 60 mpg? It's a D15Z1

 

[double0Si]

Edit to mods: Thank you.

 

[RoughKnight]

The d15b combines the best of both worlds. Vtec-e for gas savings, and normal vtec with a redline at 7k for top end power. So if he wants to push the pedal he can. I love mine. Wish I had the lean burn mode

 

[Ethan]

I just know im never going back to d15... fuck that shit puto!

 

[RoughKnight]

Lol ditto, can't wait till I get a decent job...