Hey guys just wondering I was told by a big name shop around my house that it would be more sufficient to run a stock ob2 h22 ecu and wire it properly with all the wires (told me there was about 24 wires) other than just use an obd1 p28 and hook up the 6 wires it needs to run. Everyone I know and I've heard from has told me the P28 is much much better because it is easier to tune rather than to tune a stock ob2 h22 ecu. Can any experts give me some insight on this?

Thanks

 

wat year is the car? if its obd2 get a conversion harness and a p28 its plug and play

 

Sorrry forgot to state it's a 1996 civic hatch so it's ob2 already.

 

obd2 sucks to tune, get a conversion harness and obd1 p28, its plug and play, simple

 

i would just get a jumper harness and run a p28 obd1 and u can tune it much easier

 

exactly

 

I don't know what smog is like where you're at, but a OBD2 p13 wired up properly will allow you to pass a sniffer test (EGR functional) and any OBDII port-plugin test as well.

If you do things that way, then you can get a OBDII->OBD1 jumper harness and a p28/p72 and tune using that, switching back for smog time.

Also, unless you switch to a Euro-R IM, the p13 will be a lot nicer around town than a tuned P28, because not having IAB control (means they stay open all the time) kills power below 4k RPM.

 

So using a chipped p28 I would be losing power or gaining at WOT?

 

Chipped or tuned?

I'm sure with proper tuning a p28 will make more power at high-rpm and WOT...

But with the IAB nonfunctional, you will lose power below 4k in all circumstances.

Try to find a p72.

PS: Get Neptune RTP... It's so much easier to get a H22 to behave properly at part-throttle and idle with Neptune than anything else, aside from a stock ECU.

 

p28 will make more power...actually once its chipped it really doesnt matter wat ecu you have cuz you can alter everything....but for emissions purposes of course the stock one will be best...in nj if you have obd2 car 96+ you need stock ecu and cant have cel's or else it fails on the spot...trust me i know, cuz i do em

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by anth2k4 &raquo;</TD></TR><TR><TD CLASS="quote">Hey guys just wondering I was told by a big name shop around my house that it would be more sufficient to run a stock ob2 h22 ecu and wire it properly with all the wires (told me there was about 24 wires) other than just use an obd1 p28 and hook up the 6 wires it needs to run. Everyone I know and I've heard from has told me the P28 is much much better because it is easier to tune rather than to tune a stock ob2 h22 ecu. Can any experts give me some insight on this?

Thanks</TD></TR></TABLE>

What this 'big name shop' told you is one the best way, but one of a few ways to power the H22 engine. It's considered the best way because the H22 ecu is programmed specifically for the H22 engine; it has perfectly matched fuel and timing maps for a stock H22 engine.

When you get into using a P28 or P72 ecu, you run into a guessing game when it comes to reprogramming and you risk not running at full potential with teh H22 engine and either of these ecu's..... unless you run an ecu such as a Hondata and tune it at the dyno, or know of an ecu programmer who can tune a program for you while on the dyno. The *** dyno is not a very solid way of tuning

But, the perk about using a P28 or P72 ecu is the whole pesky EGR issue H22 swaps have in civic/integra chassis's. You won't need to worry about the EGR sensor when using a P28/p72 ecu, but you will with a P13/H22 ecu. It's not a real big deal to figure out and wire in, but you will have to do it. If you search the Hybrid or tech forums you'll find the wiring diagram on this. Other pros/cons of using either of these ecu's are:

P28 - no need to wire in knock sensor; will absolutley need reprogramming job as the stock P28 (SOHC) maps are insufficient (too lean) for an H22 engine; P28 cannot control the IAB's so you will lose some low end torque because of this.

P72 - no need to worry about EGR; stock programming is better than a stock P28 but is still insufficient for an H22 engine, you could get away with cruising round town with a stock P72; P72 can control the IAB's so you will not lose low end power.

 

you could have a mildy muilt h22 and run a stock p28, i ran my car at the track with stock p28 i never had issues...

 

Hey, if you don't care about running your engine lean as hell and with potentially dangerous ignition timing, go for it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alphajesse &raquo;</TD></TR><TR><TD CLASS="quote">Hey, if you don't care about running your engine lean as hell and with potentially dangerous ignition timing, go for it.</TD></TR></TABLE>

p28 is absolutely fine on a bone stock h22....stock h22's with a p13 run extremely rich....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by h2b_eg8 &raquo;</TD></TR><TR><TD CLASS="quote">

p28 is absolutely fine on a bone stock h22....</TD></TR></TABLE>

If you like living dangerously

 

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

If you like living dangerously </TD></TR></TABLE>

g23vtec 11.7:1, 440cc injectors, 255 lph fuel pump driving and beat on for 7,000 miles went to the track 2 different days and a **** load of street races on a p28 untuned....everything is still fresh...trust me your not gonna run lean...just keep your timing down to keep from detonating...p13 ecu's are garbage and run stupid rich

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by h2b_eg8 &raquo;</TD></TR><TR><TD CLASS="quote">

g23vtec 11.7:1, 440cc injectors, 255 lph fuel pump driving and beat on for 7,000 miles went to the track 2 different days and a **** load of street races on a p28 untuned....everything is still fresh...trust me your not gonna run lean...just keep your timing down to keep from detonating...p13 ecu's are garbage and run stupid rich</TD></TR></TABLE>

are you speaking of a bone stock/unchipped P28?
Or one that is chipped, but untuned?

 

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

are you speaking of a bone stock/unchipped P28?</TD></TR></TABLE>

yes