Setup was tuned yesterday and made decent power on 91 octane. There is a misfire/hesitation issue right around 5K under full throttle. Currently running a MSD 6AL and Blaster 2 coil. Tuner said it could possibly be the external coil (brand new) or plug wires. I tried a new set of spark plug wires and same issue; misfire. If you look closely right around 5k you'll see where it misfires. Any ideas? Thanks for the input.




Modified by TrackSpeedRacing at 8:51 PM 4/26/2008

 

Remove the msd bullshit and try a distributor assembly from a vehicle you know has no ignition issues etc.

 

MSD = Engine damage
blew up many distributor coils before using MSD set-ups.
Everything OEM is Best!!

 

Thanks for the input. I guess i'll be removing the 6AL and Blaster 2 coil. OEM dizzy will be installed tomorrow.

I'll let you guys know what happens. Thanks.

 

MSD Hatters! lol

Just Ditch the little crappy red Coil and get the really big Blue one! HVCII

 

Are you talking about this one?

 

F yeah that thing has put in like 4 years of service for me! Good Stuff!

 

Installed a brand new TD68U obd1 distributor and it's still misfiring under WOT at the same RPM. To better describe it, when I accelerate from a dead stop and gradually apply throttle (2,000-4,000rpms) then floor it, the motors feels as if it cuts out momentarily then comes back to life. Setup is tuned with Hondata s200 (o2 sensor disabled), 440cc RC injectors, 255lph HP walbro fuel pump, skunk 2 pro cam gears, adjustable fpr, and NO check engine light. I guess the MSD had nothing to do with this problem. Any other ideas?

 

What is your A/F right at that point? the dyno sheet doesnt show it. if its really rich at that rpm it would cut out then smooth out once the rpm gets into a good A/R ratio.

 

what are the plugs gapped to? what is your vtec crossover?

how are the timing values during the transition?

 

Try replacing the S200 with a S300. For what ever reason, the S200s have been buggy.

 

damn dude i kinda had the same problem. check your board on the Ecu. if not that maybe bad Dist. Ignitor

get rid of that aftermarket distributors those things are crappy.