I have a 1999 FRC with cam/heads/intake/long tube headers with hp cats, won't pass emissions in Rhode Island, is there a tuner in the area that can help me out, does it need to be dyno'd. Any help on this would be greatly appreciated. Thanks, Bill

 

Depends on WHY it won't pass---Do you have any codes ?? Or will it not pass because of high NOX or HC's ?
A tuner can get rid of all the codes associated with your mods
Your biggest challenge will be the LT's----The 02 sensor location on LT's is usually further back then they were with stock manifolds--this makes your 02's give erroneous readings in closed loop (part throttle) even though the ECM and 02's are commanding a 14.68-1 AFR you are probably ending up with something much richer--more likely 12.1
Another issue is your Hi-flow cats---many of them won't pass emmisions--The bullet types are known especially for this--Since Jan of 09 the smog police have really cracked down on cats--here in calif they look to see if there is any new welding on your exhaust--If so you must have cats that are on the approved list or they will not pass you-Also before if a car was over 10 years old you could change them without a problem--NOW the car has to be older than a 98 before you can legally change them--And i assume every year they may change that date---
Good news is that a tuner can correct the codes--Correct the 02 false readings so you get 14.68-1 again in closed loop--a wideband is neeeded---I would get it tuned 1st--then depending on which cats you bought--make a decision on those--

 

I found a dyno tune shop that is familiar with these cars and will be able to help me out. You were RIGHT ON with the cats. Thanks so much for your reply, I printed out your reply and brought it to the shop, we will be taking your advice. Thanks again tblu92!!!