Hatch It

I heard from a friend that if i purchased a D15B that the ECU will have errors because the fuel in america isnt like 108 Octane like it is in Japan? Is this true?

Will i have to add octane booster everytime i fill up for it to not throw a code or something? Or will it be fine and adjust to the american octane ratings???

Just curious, thanks for the help

Hatch It

come on H-T dont let me down, you never do!

DJ_SaNdOz

Your friend is retarded. The P08 will run perfectly fine. Japan has a different gasoline rating system, it's comperable to US gas. There will be no CEL's unless there are sensor or motor trouble.



That's for your friend.

Redline96LX

your referring to the JDM version of the D15B with the twin vtec system right?

First, 108 Octane is rediculous. Go find the comp. ratio for me, cause 108 would be for like 13:1 compression or somethin. The most you'd need was premium. Their fuel has different ****, I think sulfur or somethin. But anyway, the motor's problem here is the emissions, which is what the ECU will do, is not pass emissions. If you "tune" your engine, then you get it to run more effeciently, burning all fuel, having enough PCV and EGR to keep NOX down, and put more power. So if you use the JDM's computer of the JDM D15B, i reccomend you get the engine "tuned" like have the PROM chip flashed. Check with the computer nerds to hook you up.

Hatch It

So pretty much a D15B from like Hmotorsonline, put in my car, it wont pass emissions? And i would need all this ECu chipping/tuning done to make it legal?

DJ_SaNdOz

If it is just the standard D15B VTEC it runs on a P08 naturally in Japan, a P28 will also run it. There is supposedly a performance difference between the P28 & P08 due to better fuel/ignition maps on the P08. If your state just has a standard emissions test than you should be able to pass smog w/ no problems, it is a Honda afterall. If you live in like CA, than most likely it won't pass the visual since there is no US counterpart. You should not need special tuning to pass a smog test either. Oh yeah, the 92-95 Di5B is a normal, single stage in VTEC. There is a varient that uses a 2 stage VTEC setup, but they don't seem to be as prevalant.

Redline96LX

thats true. As long as the D15B from japan is in good shape and clean, it should still pass actual emissions, since like he said it IS a Honda. But in california, they may check that ****, or be more stringient. My 96 civic D16Y7 in GA passed so far it coulda been 5 motors and id beat a lotta SUVs out there.

Luserkid

Your not in Cali you have nothing to worry about passing emissions.

I have yet to heard of the D15B passing visual and thats what matters most out here.

Your friend probably heard something about knock sensors and over did it. KS does read octane levels so you dont ping or knock. With a KS i think you need premium or 89 atleast (someone correct me if im wrong). But not 108.

Hatch It

D15B Swap, ECU that comes with the hmotorsonline.com swap, i am in PA, it will be fine? Thats my main problem.....

I just want to make sure everything will be 100% before i spend 500 bucks on a motor that wont be worth the time or money

Thanks ALOT for the help though

DJ_SaNdOz

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hatch It &raquo;</TD></TR><TR><TD CLASS="quote">D15B Swap, ECU that comes with the hmotorsonline.com swap, i am in PA, it will be fine? Thats my main problem.....

I just want to make sure everything will be 100% before i spend 500 bucks on a motor that wont be worth the time or money

Thanks ALOT for the help though </TD></TR></TABLE>

You just have the standard safety inspection, and sniffer test correct? if so, the D15B should pass.....

D15B_Ej6

My d15b runs fine on 89 gas. If your worried about using the p08, just use a p28. I have used both and didnt notice much of a difference. I have used 87 gas and its fine.

SOHCEK-Turbo

iTrader: (1)

Not to be an *** but you have more post then I and you are making these kinds of questions?

DJ_SaNdOz

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by D15B_Ej6 &raquo;</TD></TR><TR><TD CLASS="quote">My d15b runs fine on 89 gas. If your worried about using the p08, just use a p28. I have used both and didnt notice much of a difference. I have used 87 gas and its fine.</TD></TR></TABLE>

I use 87 on mine w/ no ill effects, but i am running a P28

Cuong-nutz

Don't mean to post jack, if I am, but what's the compression rating on the JDM D15B?

DJ_SaNdOz

9.6:1 IIRC

HULKHATCH10

IF U DONT WANT PROBLEMS USE A P28 ECU , AND U WILL PASS EMISIONS. I PASS WITH A LIT EXTRA$$$ , GOOD LUCK