1jz cutting at 5000rpm after 1zz coil install.

[cpederson]

Car is 1jz, pt6265, rc1200's, walbro 450, e85, ngk iridiums gapped at .024, 1zz coils, haltech ps2000. Now the car will pull fine sometimes but mostly it will cut/lose power at 5000rpm to 6000rpm then power with come back like someone hit the Nos button. I have no idea what it could be, I've gone thru everything, clean the injectors, new plugs, different plug gaps, messed with the tuning a lot, I just can't seem to pin point it. It also troubling bc it's not consistent. Any input would greatly help

Thanks Corey

 

[hvyman]

What sort of dwell time do you have?

 

[cpederson]

I believe it's 2.5ms

 

[Radial]

sounds like you are missing sync from 5-6k to me.

Check your trigger system for errors (check for full sync on cam+crank all the way to the redline).

 

[shipkiller]

I believe it's 2.5ms

Fixed dwell or you have rpm/load/voltage compensation.
1zz coil will discharge early to protect themselves if their dwell is set too high

 

[cpederson]

Ya it's just set a fixed dwell