Went to the dyno last saturday. Started to tune it and realized cylinder 2 and 4 were running very lean. Was also having issues dialing in the A/F ratios. One pull would be good and another one would be lean all the way up. Also, the car is making 100 less whp than it did last year on the same set up. Checked the compression and it was 200-210 across all cylinders.

Any ideas?

The set up is an ls/vtec with a modified rev-hard kit. Tried tuning it off the 15 psi wastegate spring when the issues began.

Thanks in advanced for any thoughts and advice

 

soon to be

 

?

 

what ems and injectors

 

check the injector filter. might be dirty.
or put more %duty injector on 2 and 4. if your AF change, you need to clean them.

 

hondata s200 and the injectors are brand new 1000cc rc's with a brand new fuel filter and all new fuel lines

 

Do the injectors have the right harness running to them?

My friend's boosted GSR was giving him problems the other day with idle and WOT. Injectors 2 and 3 had misplaced plugs, he switched them around and the car was fine after.

Just my .02

 

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by awdgsx96 &raquo;</TD></TR><TR><TD CLASS="quote">Do the injectors have the right harness running to them?

My friend's boosted GSR was giving him problems the other day with idle and WOT. Injectors 2 and 3 had misplaced plugs, he switched them around and the car was fine after.

Just my .02</TD></TR></TABLE>

Good thought. It is a possibility, since last season i converted the car to rhd and did a wire tuck, so i very possibly could have botched them up. Thanks.

Any other thoughts?

 

anyone?

 

no one else before i work on it this weekend?

 

ya check the wiring sounds like it could be the issue. you didnt get any debri in the line at all did you when you ran new fuel lines?

 

Its definitly possible but i doubt it. I switched the injectors around last time i worked on the car to see if it is an injector problem. So i will see if that changed the cylinder running lean tonight.

 

also what kind of injector wiring are you using? Injector driver or a resistor box? those do fail as well.

 

a resistor box, yeah i was going to check that as well. Anyone know what the valued resistance should be within the box? Or a valued voltage drop across it?

 

How did you know you were running lean in the two cylinders? Do you have an EGT in each runner on the mani? Or is this going from speculation on the tune?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by awdgsx96 &raquo;</TD></TR><TR><TD CLASS="quote">How did you know you were running lean in the two cylinders? Do you have an EGT in each runner on the mani? Or is this going from speculation on the tune?</TD></TR></TABLE>

Thats what I was wondering unless he kept pulling the plugs and checking them out...