High everyone I've HD this problem ever since I've owned this car.
The cars running lean
For the car to be able to run normal timing is advanced to 25degres. Otherwise when I'm on wot car will splutter its way to high revs then free up. If I put a boost controller on and have 10 pound boost under wot it backfires with flames.
New plugs
Good coil packs
Rb20,turbo ?
Glows red after a normal drive.
Engine comp
1. 150 2. 140 .3 140 4. 140 5. 145 6. 140
Standard ecu standard injectors
Only mods are front mount and dump pupr back exhaust
And a walbro fuel pump 6 months old.
What could this be ???