What is the difference between p28 and p72 ECU
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Junior Member
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From: waterloo, Canada
What is the difference between p28 and p72 ECU
Just wndering if someone could explain the difference between both of them, advantages and disadvantages. Am planning to do some tunning with Uberdata and a lot of people are changing from p72 to p28....I dono why????? What a p28 does that p72 can't. Please if someone has any ideas please respond.
ps I drive a 95 Prelude SRV.
ps I drive a 95 Prelude SRV.
Honda-Tech Member
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From: Orange County, CA
Re: What is the difference between p28 and p72 ECU (H22SRV)
a P72 is a OBD1 GSR ECU. It differs from a P28, in that the P72 can control the IAB's aka the secondary butterflys in the intake manifold, and it is able to use a knock sensor.
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From: East Village, NYC
Re: What is the difference between p28 and p72 ECU (98TypeSH)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98TypeSH »</TD></TR><TR><TD CLASS="quote">a P72 is a OBD1 GSR ECU. It differs from a P28, in that the P72 can control the IAB's aka the secondary butterflys in the intake manifold, and it is able to use a knock sensor.</TD></TR></TABLE>
there are OBDII p72's well.
Anyway, I remember hondata saying that the P28 was just easier to work with and has a faster processor (?) I'm no expert on this.
AFAIK Hondata and Uberdata should be able to run secondary IABs, so really p72 vs. p28 is more of a knock sensor issue. But if you're doing uberdata/hondata tuning do you really need a knock sensor?
there are OBDII p72's well.
Anyway, I remember hondata saying that the P28 was just easier to work with and has a faster processor (?) I'm no expert on this.
AFAIK Hondata and Uberdata should be able to run secondary IABs, so really p72 vs. p28 is more of a knock sensor issue. But if you're doing uberdata/hondata tuning do you really need a knock sensor?
Joined: Jun 2003
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From: Mission Viejo, CA, USA
Re: What is the difference between p28 and p72 ECU (satan_srv)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv »</TD></TR><TR><TD CLASS="quote">there are OBDII p72's well.
Anyway, I remember hondata saying that the P28 was just easier to work with and has a faster processor (?) I'm no expert on this.
AFAIK Hondata and Uberdata should be able to run secondary IABs, so really p72 vs. p28 is more of a knock sensor issue. But if you're doing uberdata/hondata tuning do you really need a knock sensor?</TD></TR></TABLE>How do the fuel maps compare?
Anyway, I remember hondata saying that the P28 was just easier to work with and has a faster processor (?) I'm no expert on this.
AFAIK Hondata and Uberdata should be able to run secondary IABs, so really p72 vs. p28 is more of a knock sensor issue. But if you're doing uberdata/hondata tuning do you really need a knock sensor?</TD></TR></TABLE>How do the fuel maps compare?
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From: On the Prowl, Mo
Re: What is the difference between p28 and p72 ECU (diewX3)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by diewX3 »</TD></TR><TR><TD CLASS="quote">How do the fuel maps compare? </TD></TR></TABLE>
It doesn't really matter because you wouldn't want to run either
of the stock fuel maps with the h22.
It doesn't really matter because you wouldn't want to run either
of the stock fuel maps with the h22.
Honda-Tech Member
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From: Orange County, CA
Re: What is the difference between p28 and p72 ECU (SKDRCR)
the whole point of wanting to use a P72 or P28 on hondata or uberdata is to customize your fuel maps and everything to YOUR car. not just go buy a p72 and plug it in and drive.
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From: northern DRUNKit, ma
Re: What is the difference between p28 and p72 ECU (H22SRV)
you can find plenty of information on the differences at http://www.pgmfi.org
they are in the same faimly just as the prelude and accord ecus are in the same faimly
they are in the same faimly just as the prelude and accord ecus are in the same faimly
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