MSD RPM Activated switch for Vtec, few questions reguarding fuel..
Thread Starter
Junior Member
Joined: Oct 2002
Posts: 449
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From: Philadelphia, PA, USA
MSD RPM Activated switch for Vtec, few questions reguarding fuel..
1991 crx si, with a D16Z6 using an msd to activate vtec, i know my fuel maps will still be the PM6 maps, i guess the only way to get the best maps is to wire to obd1 and use the p28 right?
or a v-afc..
lemme know.
or a v-afc..
lemme know.
No Big Whoop
Joined: Jul 2001
Posts: 2,120
Likes: 4
From: A little closer to the Ecuator
Re: MSD RPM Activated switch for Vtec, few questions reguarding fuel.. (Sirex)
VAFC all the way.
With the P28 you are stuck with the fixed fuel maps on that ECU.
With the PM6 and VAFC you have much more tunability.
With the P28 you are stuck with the fixed fuel maps on that ECU.
With the PM6 and VAFC you have much more tunability.
Technical Hero
Joined: May 2002
Posts: 9,875
Likes: 35
From: Charlotte, NC, 28227
Re: MSD RPM Activated switch for Vtec, few questions reguarding fuel.. (Sirex)
use pr3 with the mugen program(deleted 2nd 02 and knock sensor), no codes and runs great, and plugs right in, just need to run two wires
[Modified by yebabee, 9:15 AM 3/25/2003]
[Modified by yebabee, 9:15 AM 3/25/2003]
Honda-Tech Member
Joined: Apr 2002
Posts: 4,834
Likes: 1
From: OH
Re: MSD RPM Activated switch for Vtec, few questions reguarding fuel.. (Spaceballs the lunch box)
VAFC all the way.
With the P28 you are stuck with the fixed fuel maps on that ECU.
With the PM6 and VAFC you have much more tunability.
With the P28 you are stuck with the fixed fuel maps on that ECU.
With the PM6 and VAFC you have much more tunability.
but u can do it sgo OBD1 and get a P28 rechipped... theres tons of programs for that ECU... but they might be too agresive for the SOHC and run rich all the time
i say PG7, with VAFC
Junior Member
Joined: Mar 2003
Posts: 152
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From: Reno, NV, USA
Re: MSD RPM Activated switch for Vtec, few questions reguarding fuel.. (photonjedi808)
I have the same setup as you. I have a chipped PM6 ecu (Mugen spec), and it runs great. The car seems to run a little rich at low rpm's and mid rpm's before vtec crossover, but once vtec hits, the car just becomes a beast. I would just stay with a chipped PM6 program, but a VAFC is good to tune with IF you have access to a DYNO.
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