My IM on my GSR has its Butterflies taken out will this affect a P72 Ecu, will I throw codes? Should I even bother Wiring them up if not will I throw codes? Should I use my P72?

 

no. It will not give you a code.

 

get a p28 and itll fix it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hybridvteceg &raquo;</TD></TR><TR><TD CLASS="quote">get a p28 and itll fix it.</TD></TR></TABLE>


True, but running p72 with no butterflies wont hurt anything.

 

youll get a code

 

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


What code will you throw??? The butterly runs off vacuum. I ran mine for 3 years with the butterflies took out. There isnt one code that I can find for the IAB.

 

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

The P72 DOES control the butterflies by means of a vacuum solenoid. But it won't throw a code if there is nothing connected.

 

OBD-1 P72 doesn't have a code for IAB at all.

I think OBD-2 has a code if the IAB solenoid valve is gone. If that valve is in the circuit, but the vacuum hoses aren't connected; the ECU has no way to know the actual valves aren't working.

 

Well, P72 has to have a knock sensor. Your best bet is to get a P28 and have it chipped. Only problem you might get is a vacuum leak from removing the butterflies. I run a spoon chipped P28 and I pull harder from a stop than a gsr w/butterflies and a P72.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jun8386 &raquo;</TD></TR><TR><TD CLASS="quote">Well, P72 has to have a knock sensor. Your best bet is to get a P28 and have it chipped. Only problem you might get is a vacuum leak from removing the butterflies. I run a spoon chipped P28 and I pull harder from a stop than a gsr w/butterflies and a P72. </TD></TR></TABLE>


What does this have to do with manifold butterflies? If the block has a knock sensor he has nothing to worry about.

 

I might not be right but the P72 has to have a knock sensor. if the knock sensor isn't ran then the car wont start. with a p28 u only have to have v-tec, ground, and oil pressure for it to run. Right?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jun8386 &raquo;</TD></TR><TR><TD CLASS="quote">I might not be right but the P72 has to have a knock sensor. if the knock sensor isn't ran then the car wont start. with a p28 u only have to have v-tec, ground, and oil pressure for it to run. Right?
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If there isnt a knock sensor you will throw code 23 that is all

 

I was wrong about it not starting but I dont think v-tec will kick in if there isn't a knock sensor with a p72. Right?

 

I think vtec doesnt kick in since not having the knock makes the ECU go into Limp mode