EG_SINZ

okay this car /swap has fought me the entire way and why not fight some more .

I took it for a ride and noticed that vtec was ****ed up....Everytime vtec would engage it would sound like the car was choking and not getting any power...(almost like a series of mini backfires).

the rpm tach is all over the place. as soon as hit 5k it would bog. and then gain power. and then check engine light would come on .
the car is a stock gsr . obd1 open header at the moment . . slow as a d series


also to add the car was warming up and when shut off could hear a bubbling sound front the intake manifold and there was water near the manfiold gasket bubbling ;(

DELshaneSOL

What ecu?

EG_SINZ

there was a chipped p70 that was used on a type r and check engine light right away ...........

so i changed to a p28 stock and no check engine light .

doesnt look like the speedo is working properly either i have a video of it and just looked and speedo climbed faster then the rpms .

http://www.youtube.com/watch?v=HoW52...ature=youtu.be

DELshaneSOL

It only does that when you hit on hit or can you drive it normally?

EG_SINZ

driving normal if it gets to 5k it begins to break up huge .. if i shift under its fine . but it seems as soon as vtec. and when i was in reverse it kept stalling it even when clutch was in

this car has been fighting me the entire swap and what not

DELshaneSOL

Your vtec kicks in at 5k?
Did you drive it at all before you put the ecu back to stock

Dc4LsTeG

iTrader: (7)

What do you expect open header?for it to be faster?

EG_SINZ

it doesnt seem likes it kicking in but around the 4-5k is when it starts breaking up i posted a video of it .

this was the first drive today the video is the stock ecu

Dc4LsTeG

iTrader: (7)

Do you have a stock gsr intake mani? Idk why your trying to run it on a stock p28

EG_SINZ

smart guy i have a open header atm because it doesnt fit and i have to get the exhuast put on monday . not for the faster part


yes stock gsr manifold i have a spare stock p28 so i was seeing if it worked but its still breaking up at 4k look at video ... also i was running it on a p70 chipped at first but was seeing about the ps28

Dc4LsTeG

iTrader: (7)

Smart guy lol....I have a feeling its cuz you have a stock intake mani with butterflies but your trying to use a p28 which is not for that engine. And just so you know there's no such thing as a p70

DELshaneSOL

I was thinking it had something to do with the ecu also

sirtef9

iTrader: (4)

Is the ground on your thermostat hooked up?

EG_SINZ

i said smart guy comment because u assumed im trying for the cool street status of running open header

my buddy is bringing by a chipped ecu tomorrow to see if it is a ecu problem hopefully it is . this is getting redicoulus

Dc4LsTeG

iTrader: (7)

That's not what I assumed. I assumed you thought your car would be faster open header cuz that's how you made it sound. What chipped ecu will you be trying?

EG_SINZ

ahh it came off different lol . nope i couldnt make it today to get the exhuast put on .

he is bringing a chipped p28 for his gsr. this car has fought me the whole way DONT buy someone else wire tuck....................

sirtef9

iTrader: (4)

Is your ground on your thermostat on? That always messes with tach if off or loose...

EG_SINZ

im going to go look at it right now stiref ..

sirtef9

iTrader: (4)

word mane...

EG_SINZ

got a new bolt on there and its tight now started up i got a check engine light on so tomorrow ill see what code it is and says idling at 500 area then it drop a little .


someone just said this

I know exactly whats wrong. Its a burnt out rotor and cap contact points inside the distributor. You can try and lightly sand them with 600 grit and see if it helps or just buy a new rotor and cap and your car will run like a champ again.

srsbznz

Can't hurt especially if it's been awhile or you didn't do it when you did the swap.

Show15

A stock p28 will run completely different that the gsr is designed to run. The p28 is a single cam ecu it only has vtec for intake. DOHC has vtec for both intake and exhaust. So a dual cam ecu can compensate for the extra air both coming in and going out as for a p28 will only compensate for the air going in. This will cause serious issues as the ecu has no idea whats going on with so much air coming and going. Get the right ecu and go from there.