hey whats up all, i recently got the jdm h22a for my 95 prelude, went in for my va state inspection/emmissions and i failed emmissions due to nox, im gettin a new cat, but believe that because of the jdm's ridiculously advanced timing (compaired to us. spec) that i will never be able to pass emmisions..... anyone able to give me any ideas, i only have like 12 days left before i have to have it reinspected.......

awaiting advice in destress,

 

I thought the jdm motors will not pass Emissions

 

Do a search there has many related threads were i think you will find some helpfull info for your problem.. good luck.

 

94 jdm h22, usdm p13, prelude cat, full working egr, aka everything is how it came from the factory. passed emissions fine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by delLudeVTEC &raquo;</TD></TR><TR><TD CLASS="quote">94 jdm h22, usdm p13, prelude cat, full working egr, aka everything is how it came from the factory. passed emissions fine.</TD></TR></TABLE>

93 JDM H22, JDM p13, Civic cat, non-working EGR = horrible failure. I think I scored 148ppm on CO where the limit was 10 lol

Granted, the ignition and fuel filter were kinda old. Also, the cat lowered CO to 148 from 160... so not a big change in that dept.

Adi

 

the timing isnt ridiculously advanced actually on JDM ecus, it is a different timing curve than the USDM but its not anything to get axcited about.
if you ahve high nox retard your timing some or find some way to richen your fuel up if your HC and CO are low.

 

use a b-52 v8 cat and good gas guarrenteed to pass