Hi guys new to the forum and love what im reading. Im having troubles with my ls. I have IHE and no tune with a test pipe that will be coming out soon. The problem im having is that it breaks up from 1200 to 2700 then runs great ive checked all my timing. All marks line up and ignition timing set at factory specs. Anyone have this before?

Bump?

Well for a start do you have a CEL? If so pull codes and let us know what they are.

Oh sorry no cels. sounds like im hitting a rev limiter until 2700+/- then it clears up.

bad connections somewhere possibly?

All connectors pushed together good. Anything else?

is this a swapped motor or in the original car?

it is a swapped engine but its how i bought it. its actually a DC2 chassis.

Check the tps sensor and try another ecu. Ran into that problem with one of my customer's car.

checked tps its in spec. could it be a bad cap and rotor cause i notice that its only when i give it to much gas. if i feather the gas it runs smooth.

[youtube]http://www.youtube.com/watch?v=WfcMtgVTIdQ[/youtube]
Heres a vid while driving i know dangerous but listen to the way the car sounds.

check the coil. my car did almost the same thing just at different rpms...