rolling road for an LT1 camaro
Discussion
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
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
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.
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.
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.
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.balls-out said:
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.
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.As it's a '97 you'll need a hand held to be able to adjust anything as it's only pre '93's that you can re-chip.
The best hand held would be a Tech-1, but they're very expensive, you could buy a Hyper-Tech tuner (they turn up on eBay quite reguarly for cheap money).
Plugs are a pig to change, best to do from underneath if you can get access to a ramp.
If everytime you drive it you've a silly grin on your face then it's definately a heavy foot issue!!
The best hand held would be a Tech-1, but they're very expensive, you could buy a Hyper-Tech tuner (they turn up on eBay quite reguarly for cheap money).
Plugs are a pig to change, best to do from underneath if you can get access to a ramp.
If everytime you drive it you've a silly grin on your face then it's definately a heavy foot issue!!
Hand helds suck s
t. You are much better off with a mail order tune from the US.
http://www.fastchip.com/ do good ones. Just tell them your mods they will have a dyno developed tune for it. Or see what the guys on camaroz28.com recommend.
93 LT1 had an EEPROM and Speed density only, whereas later ones are flash ram and MAF fueled. You may need to pay a deposit and send back your old ECU as they will flash that.
Thats what Id do. You can get some handheld's with a few base tunes in them, but they are truely bad and only pretty much change injector fuel rates rather than a proper mapping out of the ve table and MBT based spark changes.
t. You are much better off with a mail order tune from the US.http://www.fastchip.com/ do good ones. Just tell them your mods they will have a dyno developed tune for it. Or see what the guys on camaroz28.com recommend.
93 LT1 had an EEPROM and Speed density only, whereas later ones are flash ram and MAF fueled. You may need to pay a deposit and send back your old ECU as they will flash that.
Thats what Id do. You can get some handheld's with a few base tunes in them, but they are truely bad and only pretty much change injector fuel rates rather than a proper mapping out of the ve table and MBT based spark changes.
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