ok i have my 03 gtp 40k . cai.zzp 2.5dp w cat.180 stat. auto lite 605 gapped at .050. intense pcm with 3 deg more timing and raised shift point to 6 k fan tuned for 180 tstst.s&S plog. i have a 3.4 pulley that i put on saturday.car was making 0 kr with the stock pulley and plugs with the 195 tstat.know it making 4 degs kr with the colder plugs the colder thermostat and the 3.4. .. should i go to a 3.5 pulley? i do not want to do rockers or cam or ic at this time but i want the car to run and run good with out hurting anything. will the 3.5 get rid of 4 degs of kr .i was thinking my tune was hurting me to because of the added timing. my other ? is any one no a good tuner for these car up in the new england area. or who in the best tuner to buy a pre tuned ecm off of. thank also only run 93 oct in it
