'Trust'

iTrader: (24)

Like it says, will a banging y pipe cause false knock? my car is going in to be tuned on wednesday and i dont want that to be a problem

Caribe

iTrader: (1)

It could:
It's a well known fact that all LS1 F-Body cars have a "banging" issue when a set of long tube headers are installed. This banging causes the knock sensor to activate, causing a timing retard, taking away much needed horsepower under hard acceleration (usually at a drag strip when traction is ideal). This Mufflex hanger uses a rubber bumpstop that will not allow the Y-pipe to hit the underbody of the car causing this situation. The lower clamp and support rods are made out of stainless steel (tig welded for strength) and the upper rod is zinc coated steel.
http://www.thunderracing.com/catalog...&vid=3&pcid=54

'Trust'

iTrader: (24)

It just hits at idle, not WOT, so will it still cause a problem?

oange ss

iTrader: (50)

it might at idle

SmokingWS6

iTrader: (1)

If its a presistant problem and are sure its false you can always disable PE enrich KR at the track. I got my 60' back after doing so.

ryan-63nova

wedge a heater hose in between the pipe and the floor board if your worried...also my pipe does the same thing and during data collection ive never had an issue with it causing knock retard