rolling road for an LT1 camaro

[balls-out]

In years past, I would often have my cars setup on a rolling road. With both SUs and Webers* I found that it was well worth the effort, giving minor bhp and mph improvement. The Mini gained 5 bhp - no less the 7%!

I'm now on my second Caramo lt1 V8. Either I am more lead footed that before or this one is less efficient. On M way run I get 25 whereas the old one used to manage 27-29.

Is it worth a rolling road session? Obviously there won't be any changing of venturis, needles or chokes. Is the Fuel injection/CPU/modern thing programmable by a rolling road opperator or do I need to buy special chips and things.
Its a 97 LT1 with OBD2.

Thanks
Jim

• younger reader may like to wikipedia Carburettors at this point

[balls-out]

LuS1fer said:

Older GM ECUs used to require a change of chip. Not sure about the LT1 but you'll probably need a chip or an appropriate hand-held tuner. That said, I had a '98 LS1 Z28 and couldn't do anything with that as the tuner only applied to 99 and later so I imagine the ECU may have more in common with the LT1.

Dependent on mileage, I would suggest a set of new plugs (around 80k is their limit), a good dousing with fuel injector cleaner and check the air filter and PCV valve. You may get better mileage with super unleaded too, offset by the higher cost though.

Changing the plugs has the reputation of a b*gger of a job... I've only 56k on the clock, but obviously they are 12 years old, so I suspect that they still should be done.