ive searched and found little information. are the 90-91 si ecu's better than the 88-89 si ecu's? i know its easier to chip the 90-91, but is there any real difference in its stock form? btw, i have an 88 si...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 88CRsXy &raquo;</TD></TR><TR><TD CLASS="quote">ive searched and found little information. are the 90-91 si ecu's better than the 88-89 si ecu's? i know its easier to chip the 90-91, but is there any real difference in its stock form? btw, i have an 88 si...</TD></TR></TABLE>
You can't chip the 88-89 PM6s at all.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Autoworks &raquo;</TD></TR><TR><TD CLASS="quote">
You can't chip the 88-89 PM6s at all.</TD></TR></TABLE>

u can its jus harder. more work needed

 

yeah you can chip the 88-89 but most chippers prefer not to,,its a pain..most 88-89 dont have external eprom and 90-91 ecus's do have external eprom...To be sure though check the numbers :: pm6-A09,pm6-L09, and pm6-C00 are all the chippable ones..

 

so if my ecu is stamped 89 but it also says pm6-A09 its the easier one to chip?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by d15b2_T &raquo;</TD></TR><TR><TD CLASS="quote">so if my ecu is stamped 89 but it also says pm6-A09 its the easier one to chip?</TD></TR></TABLE>

Take the top cover off, post a picture of the board and we can tell you absolutely if its chippable or not.

No one bothers with the "non" chippable ones, they require a specialized burner and ALOT more work.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by splitime &raquo;</TD></TR><TR><TD CLASS="quote">


No one bothers with the "non" chippable ones, they require a specialized burner and ALOT more work.</TD></TR></TABLE>
True, that's why I called it non chippable. I have 3 ECU's and looking at the 89 and comparing it to the 91, the 91 is cake the 89 was just

 

do wat i did......took an ECU from 90 teg LS...and chipped it with that PM6 chipp,,,,cuz i didnt want to mess up my Si ecu after i got the chip...but yea....it works....i hit 8k now...so yea....oh yea...on a 91 civic Si

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by richboi &raquo;</TD></TR><TR><TD CLASS="quote">do wat i did......took an ECU from 90 teg LS...and chipped it with that PM6 chipp,,,,cuz i didnt want to mess up my Si ecu after i got the chip...but yea....it works....i hit 8k now...so yea....oh yea...on a 91 civic Si</TD></TR></TABLE>

Ok... pr4/pm6 are similar ecu architecture.
That 8k you are hitting has nothing to do with the ecu... its the program you used.
And you can make a chipped ecu "stock" with a stock chipped program.

 

yea i know that 8k is from the chip.....cuz that ls ecu is only at 6.5 also.....i jus thought he was askin bout chipped out options....cuz in comparison...the Si pm6 ecu and the ls/gs pr4.......the pr4 is cheaper....jus cuz theres more of them lynin around

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by richboi &raquo;</TD></TR><TR><TD CLASS="quote">yea i know that 8k is from the chip.....cuz that ls ecu is only at 6.5 also.....i jus thought he was askin bout chipped out options....cuz in comparison...the Si pm6 ecu and the ls/gs pr4.......the pr4 is cheaper....jus cuz theres more of them lynin around</TD></TR></TABLE>

I guess, I've found them both to be the same price and availibility, but it all depends on where/how and with whom you look.

 

besides chipping guys, are there any real differences between the 88-89 ecu's and the 90-91 ecu's? i have the 88 pm6 and was thinkin of puttin a 90 pm6 on, would this make any difference at all? thx

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 88CRsXy &raquo;</TD></TR><TR><TD CLASS="quote">besides chipping guys, are there any real differences between the 88-89 ecu's and the 90-91 ecu's? i have the 88 pm6 and was thinkin of puttin a 90 pm6 on, would this make any difference at all? thx</TD></TR></TABLE>
Would you gain any power? No.

 

k...thanks all for the info guys...

 

bringing this one back from the dead.

what are the differences between the crx PR6 and the ls PR4?

 

doesnt the 90-91 pm6 have a little higher fuel cut?not sure on this,but i heard it somewhere.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by d16efhatch &raquo;</TD></TR><TR><TD CLASS="quote">doesnt the 90-91 pm6 have a little higher fuel cut?not sure on this,but i heard it somewhere.</TD></TR></TABLE>
The PM6-A09 revision has a 7500 RPM fuel cut.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by temp &raquo;</TD></TR><TR><TD CLASS="quote">chipping is stupid and gay. at the same time. so i guess that would make it stuay? or gupid? </TD></TR></TABLE>
Eh, not if you're doing it to use something like TurboEdit to properly dyno-tune it to your specific application. Unfortunately, very few people do this

A generally stock D16A6 will run best on a PM6-A09 ECU.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Targa250R &raquo;</TD></TR><TR><TD CLASS="quote">
Eh, not if you're doing it to use something like TurboEdit to properly dyno-tune it to your specific application. Unfortunately, very few people do this

A generally stock D16A6 will run best on a PM6-A09 ECU.</TD></TR></TABLE>

i agree .