I noticed consistently this happens when pulling hard through the top end near (not on) the redline.

(video)In second gear you can hear a large hiccup from the motor obviously slowing the car down.
Mods in sig

 

sounds like an ignition break up or a fuel cut or lack of fuel. what pump size are your running? and ignition system?

 

^most likely one of those things. Also interested in what ignition setup you have. Throw on some bigger primaries like 750cc. You might also want to go look into a HKS Twin Power, or even better yet, IGN-1A Mercury Marine ignition coils!

 

Fuel cut is set at 8100, the fitting going to my secondaries is for a standard fuel line size, and has a fuel lab fpr on 40@idle. Perhaps a bigger line is needed?

340lph aeromotive

Stock ign coils, are they that bad? I havnt much experience with rotaries.


Here is a much better video.

 

What are your AFR and EGT at. Sound almost like a rich misfire. Hard to tell in the video. If your egt are low could be a rich misfire. But if all your data looks clean it would be ignition issue.

 

Theres some deleted/broken/missing plugs on the engine harness ill have to sort through.
Only had the car a few weeks now and fixed injector leak and fuel hose leak, and installed turbo.

My small list to get it running smooth is bigger -10 fuel lines, MSD (?good/bad) ign system, and figure out the plugs/wires. Its hard knowing what every nissan plug looks like and then dropping a 13b in my hands where i havnt even peeled one open before.

I was thinking 4500 is secondary injector range and maybe its a bad ground somewhere on the harness ******* with the inj firing on time. The ign plugs/coils both dont look new either.

 

And to answer your q i dont have an egt hooked up or an afr, thanks for the advice though in next gauges

 

Check and clean all your grounds. But is still sounds like a rich misfire. I had a great deal of issues with my car doing this. I was to scared to lean it out because it was reading low 11s afr when it was doing it. But misfire mess up your afr reading. So I leaned it out a little and voila problem solved. I spun my head around this problem for a long time before thinking it was fuel. You can do a pull to just before it does it and shut car down and pull plugs and check colour.

 

It sounds like the coolant buzzer is on in the second video??

What plugs are you running and what do they look like.

 

The coolant buzzer is on but its full during the video.

I need to change the plugs and get an afr gauge and try again.