I have an ls-vtec in my 92 civic hatch. It was running bad until i changed out the o2 sensor. It runs alot better now but for some reason when it goes into closed loop it wants to kinda hesitate. Its lacks of power when you try to accelerate for about 3 seconds then it just starts pulling harder and runs with the power it should have. Right now it has a chipped p28 and the guy i bought it from said that its just a base p72 map on the chip. Could this be causing the problem? Any input would be appreciated thanks in advanced.

 

its probably the dizzy maybe too far retarted try advancing the dizzy if not that then maybe the injectors. Does the car run like super rich aka black smoke when you redline?

 

Thats what i thought, but its damn near all the way advanced. Is there an easier way to time it without a lower timing belt cover. I just had to wing it really. I dont know if it smokes but it does smell a bit rich when you race it.

 

Bump want to get this fixed asap

 

Bump please help

 

To check the timing try putting a long scewdriver in the no.1 piston turn the crank untill the screwdriver comes back up and check the timing. There should be a grove on the crank pully make sure its at tdc look at the notch on the cover to the notch on the pully. If anything is off adjust to specs

 

Like i said i have no lower timing cover

 

Try to get someone to burn a P30 map and try it. I had the same issue on a lsv swapped hatch with a gsr map and installing a jdm P30 fixed the issue and the car actually got better fuel economy and even seemed faster... just a thought,,, good luck dood.

 

well do the first part putting the long screwdriver or something log and skinny in the no.1 piston by taking the spark plug out. Turn the crank the block has a notch or an arrow so that the pully lines up when the piston is all the way up

 

So you think its just that im running a stock p72 map? Cause im about to order a new chip, but i was gonna wait and make sure everything was good before I spend any more money on it.

 

Thats how i timed it mechanically. But its hard to see the mark on the block and compare it to the mark on the pulley. Also does anyone know the degree of timing that it needs to be for an lsvtec. Im gonna have to install a lower timing cover or rig up something eventually.

 

It's possible. Why not just have a map burned to your existing chip.. if not.. you can put the P72 map back on it.

 

There isnt anyone around here that burn chips for less then what i can order one from xenocron or an alike company. The only place around that does it charges you for an hour of tune no matter what so its 75 plus the actually service of burning. And i dont have a chip burner yet

 

either or maybe its off a tooth or the p72map is looking for the knock sensor but you do have a p28 right

 

Yeah p28 and if im not mistaken they dont look for a knock sensor

 

buying another chip is a band aid. Check the real issues hear first. Like Timing!

 

yeah well then you need a base map that map is probably tuned for a gsr with different specs or its off a tooth

 

i think the chip you have right now is set for different injectors i assume you have other ones on there you just dont know it cause you bought it from a guy who told you what you wanted to hear.

 

No ive striped this motor multipal times, It has stock obd1 injectors (when i got it had 3 obd1 and 1 obd0 guy was a douche). If it was timing why wouldnt it do it when it was in open loop?

 

And its not a band aid to get a new chip as ls vtecs require a custom basemap. While p72 maps will run it they arent meant for it so im not running it to its full potential

 

Which cylinder head/Intake are you using? If you're using a gsr head with IAB intake manifold it should be ok.. but if you've got a B16 head/IM.. you'll more than likely have an issue.

 

Its a b16 ctr head

 

then get a different base map get it from phearable.net they are good just tell them your specs and you will have it running better than what it is now.

 

funny thing is that all b/some d/and f series are all 235-240cc injectors so something is off

 

If you're using the ctr head with a P72(gsr) map... It won't run properly.. vtec engagement will be way too low. P72 = 4500 and P30 = 5500... P72 map accounts for IAB's... which you do not have.. I'd change it to a P30(B16) map and see if it's better.