b16a crx, vtec works but only untill 7500rpms, sorry.

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Old Mar 22, 2004 | 08:42 PM
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Default b16a crx, vtec works but only untill 7500rpms, sorry.

edit* get off my name bitch
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Old Mar 22, 2004 | 09:15 PM
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What? Vtec STOPS at 7500 or you can't go past 7500 period? change your oil?
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Old Mar 22, 2004 | 09:59 PM
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Default Re: (^jefs0ng)

Your problem is you have an OBD-0 PR3 Automatic ECU.
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Old Mar 23, 2004 | 03:17 AM
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Default Re: (beta13)

how do you tell the difference between the 2 on the out side?
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Old Mar 23, 2004 | 04:17 AM
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Default Re: b16a crx, vtec works but only untill 7500rpms, sorry. (TecHnOCal)

vtec with stock rev limiter stops at 7500 get a higher rev limiter
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Old Mar 23, 2004 | 04:24 AM
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Default Re: (japspecjohn)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by japspecjohn &raquo;</TD></TR><TR><TD CLASS="quote">how do you tell the difference between the 2 on the out side?</TD></TR></TABLE>

By the serial number.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ZCed89hatch &raquo;</TD></TR><TR><TD CLASS="quote">vtec with stock rev limiter stops at 7500 get a higher rev limiter</TD></TR></TABLE>

Umm no? He could convert it to manual though.


Modified by beta13 at 11:51 PM 3/23/2004
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Old Mar 23, 2004 | 06:59 AM
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Default Re: (beta13)

Whats different about the serial number of an automatic?
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Old Mar 23, 2004 | 11:04 AM
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Default Re: (japspecjohn)

You can tell by the letters in it, some where there is a picture floating around that shows the part of the serial number and lists all the different letters it could be and whether they are manual or automatic.
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Old Mar 23, 2004 | 12:12 PM
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Default Re: b16a crx, vtec works but only untill 7500rpms, sorry. (TecHnOCal)

Ok here's your answer, grab your ECU and look at the last 3 numbers/letters in the serial number. Now compare to this list:

in 88-91 ecus (PM6, PR4, PW0, PR3, PM7):
5spd = 000, 001, 002, A00, A01, A10, J00, J001, C01, C00
Auto = J51, J50, A50, A51, 901, A60, C50, C51, X30, A80

I had the same problem a long time ago and I was able to find the post. There is a way to modify the ECU into being a manual ECU with the 8220 rev limit, it involves moving a resisitor. I did it, it was very hard since the resisitor is a surface mount piece so it's very tiny but it did fix my rev limit.
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