Just had my car on the dyno it made 389.4 hp on the dyno jet. The only mods are a K & N filter and bassani cat back. The problem is at about 6200 rpm it breaks up a little, you can see a heartbeat on the dyno chart and actually see the engine shake when this occurs. Could this be a spark plug problem I am running stock plugs and gap (also it is running very rich 10.2:1 at peak power). Any thoughts Thank you:rockon:
HIGH RPM BREAK-UP
- Thread starter boostmonkey
- Start date
definitely spark blowout....run some ngk tr6's
Do you have a part number and recommended gap
What causes spark blowout
I have NGK TR6 (you can order them from South Florida Pulley HQ) gapped at .038. I am using a 2.93 pulley from them also.
I had this too prior to getting the plugs gapped to .038. air litterally blows out the spark. And the more boost generally the closer you will gap the plugs (generally)... or get some sort of spark booster and maintain a wider gap.
I had this too prior to getting the plugs gapped to .038. air litterally blows out the spark. And the more boost generally the closer you will gap the plugs (generally)... or get some sort of spark booster and maintain a wider gap.
TR6 is the part # and a good gap for a stock 03 would be .038 to .040.....
You can ordered them at advance auto parts online for like 1.68 each 4177 is the part #.
http://www.partsamerica.com/SelectParts.asp?mfrpartnumber=4177
http://www.partsamerica.com/SelectParts.asp?mfrpartnumber=4177
Users who are viewing this thread
