Spark plugs

[Guest erikhorton]

Running 500~525 TPS with World Spec valves, do the spark plugs need to be gapped any differently than stock?

[Guest ratchethack]

Running 500~525 TPS with World Spec valves, do the spark plugs need to be gapped any differently than stock?

Nope.

[Guest erikhorton]

Well, I'm about to give up and take the bike to the shop.

 

Here's my set up, again.

 

PCIII with map from Guzzitech

Stucchi x-over

M4 exhaust

FBF lidless airbox

TPS - connected/switch on/engine off = 517 mV

Valves - .004 / .006

Idle 1200~1300

 

I don't know what else to do.

 

I've got a miss at idle and low rpm's that all but cuts the bike off. I have to make a conscious effort to give a little extra throttle to keep it running.

[TX REDNECK (R.I.P.)]

Have you changed the relays ? I was having similar problems & turned out I had condensation in the relays.

[Guest erikhorton]

I haven't checked the relays, but I will.

 

A little more info to clarify. The problem appears to becoming from only the right cylinder, almost like its blowing back into the intake.

 

Here's a timeline.

 

All new gadgets - TPS at a stock 150 - no sputtering, but really sluggish on take off.

 

Read some threads - TPS set to 300 - no sputtering, definately got better on take off.

 

Talked to Guzzitech - TPS set to the current 500 - sputtering began, can't get it to stop, tried turning the TPS back. Adjusted the valves to world spec, balanced the throttle bodies, pulled hair out, cursed.