hoonda civic with gsrswap ecuandvtec problems help!!!!!!!!!!!!!!!!!!!
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hoonda civic with gsrswap ecuandvtec problems help!!!!!!!!!!!!!!!!!!!
i just recently bought a civic coupe with a gsr swap in it. the car was a showcar so the engine was stock but for some reason the guy has a p28 ecu in it. would the p28 make the car slowwer than the p72 bc when vtec kicks in it doesnt kick u hardlike a gsr should but the motor is still fast just not gsr fast. could it b the ecu or what. its an obd1 cvar with an 0bd2 motor with obd1 ecu and harness. help i just wantto know if the reason vtec isnt kicking hard is because the p28 ecu or is the motor not as good as i thought.
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I acn assure you it probably doesn't have anything to do with the ecu--plus GSR's aren't very fast and vtak never really kicks all that hard. There are some things that can make vtak a little sluggish though and one of them is cylinder pressure--run a compression check on the motor and make sure it looks good if gsr motors lose compression they slow up a lot. Just one thing for you to check.
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Re: (B16SolMan)
how can u say that the gsr arnt very fast. dood they run in the 14s stock they are one of hondas best motors. and the compression is good. the gsr has a p72 ecu and this has a p28 so most people tell me that is y bc its not redlining high and the vtec is getting less air fuel because the ecu is for a smaller motor. i just dont get how u say the gsr arnt that fast. the only bigger motor is the h22 and my gsr as is smoked the h22. i just posted this to see wat other people say about the ecu problem not to have people try and hate on the gsr
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down boy--if you read my post you'll see that I was trying to help--and never did the GSRs run 14's stock---
I try to help and I get a bunch of riceboy bullshit
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I try to help and I get a bunch of riceboy bullshit
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#8
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Re: (toener)
yea 14's certainly are plausible for both an eg and ef chassis. did you forget about the b18c5? its not larger but it sure as hell is a dick ton quicker then your gsr. and if you had a properly running h22 in a eg chassis, and then your gsr in that same eg chassis, the h22 is going to destroy the gsr. regardless if its a usdm or jdm swap. h22 in an eg makes a mid-high 13 second car. if its a jdm h22 or jdm h22 type s then it becomes a low 13 second car.
That aside, you can run a p28 completely fine with your gsr so long as the p28 has been chipped with a gsr map. at this point its hard to say what is actually on the ecu. only real way you could test is swap a stock obd1 gsr ecu in there and see if anything changes. do you have any cel's on? if it were a stock p28 basemap running a gsr, you would certainly have some major issues, including cel's i would have to imagine.
That aside, you can run a p28 completely fine with your gsr so long as the p28 has been chipped with a gsr map. at this point its hard to say what is actually on the ecu. only real way you could test is swap a stock obd1 gsr ecu in there and see if anything changes. do you have any cel's on? if it were a stock p28 basemap running a gsr, you would certainly have some major issues, including cel's i would have to imagine.
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Re: (D16SiHatch)
yeah i know the gsr isnt the best motor honda has obviously the type r is better but i was saying h22 in a coupe isnt that much faster than a gsr. i know this bc my buddy has a h22 coupe king tuned and its not that much faster than my buddys gsr. but anyways im not trying to argue i just want some help the swap i have has the p28 in it because the ecu the dood got with the swap was an obd2 ecu bc the swap is a 97 in a 94 obd1 coupe so thats y the p28 is in there and not the p72. the p28 is virgin and the check engine light is on. all i want to know is would vtec kick better with the p72 or should i not even bother wasting my cash that i dont have and just run the p28 until i can afford to chip the p28 or just save money and get a obd1 p72
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Re: (waterfordtuners)
i dunno about vtec "kicking" harder.. .. but it should run a hell of a lot better with the correct ecu. the stock p28 doesnt even come close to having the proper fuel curves and timing for a gsr
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Re: (D16SiHatch)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by D16SiHatch »</TD></TR><TR><TD CLASS="quote"> the stock p28 doesnt even come close to having the proper fuel curves and timing for a gsr</TD></TR></TABLE>
and no control of the iab
and no control of the iab
#13
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Re: (b20vteccoupe)
i knew there was somethin else but i couldnt think of that 3 letter acronym at the time lol. and yea either chip it or get the stock ecu. whichever is cheaper
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Re: (B16SolMan)
gsrs arent fast? they are for stock motor with bolt ons.. my **** hauls as in a civic ek with only bolt ons.. you would be surprised.. anyways try getting a different ecu for you car.. I have a jdm p72 obd2a ecu for sale. pm me for details if you need one. im in socal
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Re: (raidacaipo)
well i have a p72 ecu but it is obd2. the harness in the car is obd1 bc the civic is a 94. idk why the guy didnt do the obd2 conversion but i went to king motorsports and they said if i buya obd1 to obd2 conversion harness it wouldnt work and it would throw a bunch of codes. is that true or are they trying to get me to buy a bunch of extra ****
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also i dont wantto chip this ecu because i dont want to spend the money to chip it bc i decided to throw the gsr in my 98 coupe then i can use the obd2 p72 but for now im gona use ur guys advice and get the obd1 p72 for now.thanks 2 everyones that helped me out
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Re: (waterfordtuners)
you cant chip obd2. you need to go obd1 besides the car your using right now with teh gsr motor is obd1. I say you find an obd1 ecu but you already have one the p28. The p28 can be chipped!
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Re: (raidacaipo)
but the gsr motor is obd2 the motor itself is 97. so when i put it in my coupe the car and motor will b obd2 so i should just use stock obd2 ecu when i do the swap
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Re: (raidacaipo)
how do you know the p28 u have now isnt chipped and why wouldnt you chip the p28 if its not it will be cheaper than you buying a p72 with hondata and a chipped p28 can be setup to run just like a stock p72 and you would never know the difference
#22
Re: (solturbob16sol)
i have a 92 vx hatch with a 98 gsr motor, i'm running a chip p28 ecu for now because i haven't yet ran the knock sensor and o2 sensor, the obd1 chipped p28 dosen't have knock senor so i won't have a cel for the knock sensor just for the o2 sensor, so in your case i'm guessing that the guy hasn't yet ran the knock sensor yet that's why he's using a p28..
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Re: (waterfordtuners)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by waterfordtuners »</TD></TR><TR><TD CLASS="quote">yeah i know the gsr isnt the best motor honda has obviously the type r is better but i was saying h22 in a coupe isnt that much faster than a gsr. i know this bc my buddy has a h22 coupe king tuned and its not that much faster than my buddys gsr. but anyways im not trying to argue i just want some help the swap i have has the p28 in it because the ecu the dood got with the swap was an obd2 ecu bc the swap is a 97 in a 94 obd1 coupe so thats y the p28 is in there and not the p72. the p28 is virgin and the check engine light is on. all i want to know is would vtec kick better with the p72 or should i not even bother wasting my cash that i dont have and just run the p28 until i can afford to chip the p28 or just save money and get a obd1 p72</TD></TR></TABLE>
obviously your buddies motor is [freak]ed. because i had a b16a swap for a bit and could take integra gsr's down the track by a lil bit. i know there is a difference in an integra and civic weight wise but nothing to crazy.
in the 1/8th mile my untuned i/h/e h22 civic is runing 9.1's at 82 mph on street tires spinning all the way through second. that trap speed is good for a mid to low 8 second in the 1/8th mile.
i would love to see an untuned i/h/e gsr swapped civic pull that off........
either get a chipped p28 or come up with an obd1 p72
obviously your buddies motor is [freak]ed. because i had a b16a swap for a bit and could take integra gsr's down the track by a lil bit. i know there is a difference in an integra and civic weight wise but nothing to crazy.
in the 1/8th mile my untuned i/h/e h22 civic is runing 9.1's at 82 mph on street tires spinning all the way through second. that trap speed is good for a mid to low 8 second in the 1/8th mile.
i would love to see an untuned i/h/e gsr swapped civic pull that off........
either get a chipped p28 or come up with an obd1 p72
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Re: (ArsonistsMind)
the only time vtec doesnt work is if your knocksensor, vtec pressure switch, vtec solenoid is a throwing a code. and also if your vss isnt working. otherwise any other cel light will let vtec kick in.