1G-GTE with stinger wont run smooth

Running wasted spark setup with 440cc injectors and a reasonably cold '7' plug, however the setup is exactly the same as when I got it professionally tuned. Have checked all wiring and made sure the cas/cps wires are all sheilded and away from any interference. Static/locked timing is spot on. As you can see/hear, revving the engine results in popping backfires through the exhaust and won't rev cleanly. Any suggestions would be greatly appreciated.

Category:

Autos & Vehicles

Tags:

• Supra
• 1ggte
• 1g-GTE
• Stinger
• EMS
• Backfire

[artyboy92]

I had the same thing when I put my link in, check its on all 6 and if it is, it is probably running too rich and needs a tune (but get a pro to do that, I melted a piston running it lean and have had to build a new motor at great expense!)