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Message: <blockquote data-quote="dsg gts" data-source="post: 767234" data-attributes="member: 12862"><p>ok my question is . how bad did i screw up my sct tune? ok i have a 95gts. when i bought it it has the trickflow h/c/i setup on it 76mm mas'70mm bbk throttlebody with egr, bbk longtubed into an x pipe and full cobra 2 1/4 tail pipes. since then i took a 91 short block transplanted all of the parts from the 95 engine to the 91.so i raised my compression a bit. also it now has 2 1/2 in flowmaster 3 mufflers that dump infront of my rear end.i also totally took off the egr setup. i left the canaster setup on so that the fumes get sucked out of the tank .all of the sensors are new also replaced the harmonic balancer and put in an allumium driveshaft.solid motor mounts and solid trans mount. now it has a hard time idleing but over 2000 rpm this thing flys. the timing is set at 14 degrees advance i run it only on shell 93 preimum. it runs 12.5@108 in the 1/4 mile. should i pull out the sct chip? or get it retuned. I.m not sure. will i hurt it by running without a tune? i want to put a blower on it this next winter. so then i figured i'll for sure have to have it done. just looking for input.</p></blockquote><p></p>