Ok im ready to start again i got a 93 integra ls 1.8 b18a obd1 engine can i use the header from my 1991 ???? this car already runs stronger than my 91 ls so im so happy with this new[IMG][/IMG] one im going to add a pic of it as i start keep a running log

 

If you do use the header from your 91, you will have to reroute your o2 sensor wire so that it doesn't come out close to the collector/cat, but comes out so it will plug into the left most runner on your 91 header. That's the main difference between the 2, I think they are the same length. However, you might want to look on g2ic or elsewhere on H-T, because I think that the cat changed length between 90-91 and 92-93, that is why most 90-93 exhaust systems came with an adapter so you could use them on the 92-93 models.

 

92-93 converters are longer can't use 90-91 header.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 90da r &raquo;</TD></TR><TR><TD CLASS="quote">92-93 converters are longer can't use 90-91 header.</TD></TR></TABLE>

I checked into this, and this is correct.

This thread might help as well:
http://www.g2ic.com/forums/sho...ength

 

so not even custom fitment on install i have an aftermarket hi flow for 90-93 so it says