Hi, I have an '86 with the original non-WG banks turbo, giant 40lb rectangle airbox style. Seems like I really have to mash on the go pedal to crack the IP open. I wrestled off the giant Banks safe that they call an airbox, pulled off the cruise and freed the throttle cable from the bracket.
It had no binding or unusual resistance (at the pedal) when it was free of the bracket and off the IP. When I snaked it back to the stock location, it was binding. So I re-routed it as well as I could, and it's better, but still not ideal. Seems about a foot longer than it needs to be.
I also notice what I would call hesitation in a gasser, at just partly open throttle. This seems to be lessened with the banks vault open or off. I tested this at the IP, using the lever, with the throttle cable detatched. With the airbox open, it revs right up, but with it closed, it hesitates nearly a half-second, then revs. Added with the high pedal effort, it feels like a dog at takeoff.
Is this turbo lag? I thought lag referred to boost, not acceleration. I'm getting decent boost, around 5-6 pounds when the c6 kicks down at 65-70mph, not towing, with EGT's in the 600s. About a pound when holding those speeds.
I don't think the filter is an issue. (original K&N rectangle) It's not clean, but black. Not pink K&N oil color, but it doesn't look restricted; I can see daylight through it pretty well all around. I have a K&N kit and I'll give it a good cleaning tomorrow to see, unless someone can point me in the right direction.
As for the pedal effort, I'm thinking of just shortening the cable and sleeve at the pedal end, reinstalling the firewall bracket and trying a new routing after doing that, but thought there might be a trick or something I'm missing.
Thanks!
It had no binding or unusual resistance (at the pedal) when it was free of the bracket and off the IP. When I snaked it back to the stock location, it was binding. So I re-routed it as well as I could, and it's better, but still not ideal. Seems about a foot longer than it needs to be.
I also notice what I would call hesitation in a gasser, at just partly open throttle. This seems to be lessened with the banks vault open or off. I tested this at the IP, using the lever, with the throttle cable detatched. With the airbox open, it revs right up, but with it closed, it hesitates nearly a half-second, then revs. Added with the high pedal effort, it feels like a dog at takeoff.
Is this turbo lag? I thought lag referred to boost, not acceleration. I'm getting decent boost, around 5-6 pounds when the c6 kicks down at 65-70mph, not towing, with EGT's in the 600s. About a pound when holding those speeds.
I don't think the filter is an issue. (original K&N rectangle) It's not clean, but black. Not pink K&N oil color, but it doesn't look restricted; I can see daylight through it pretty well all around. I have a K&N kit and I'll give it a good cleaning tomorrow to see, unless someone can point me in the right direction.
As for the pedal effort, I'm thinking of just shortening the cable and sleeve at the pedal end, reinstalling the firewall bracket and trying a new routing after doing that, but thought there might be a trick or something I'm missing.
Thanks!