I'm on 33's and had the 10% underdrive done by @cruiseroutfit a few months ago and it's been excellent. Didn't raise the RPM's so much that freeway driving is miserable, but is much easier to maintain freeway speeds.
See my post just above yours. Mine pretty much only worked while driving until I replaced the oil in my fan clutch. It actually turned out that my fan clutch was almost empty, too.
This is exactly what was occurring with my 94, and it was resolved by putting a high weight oil in my fan clutch. Ever since that change it's ice cold even when stopped and 100+ outside.
I'd love to get rid of a few things. All parts are used, but functioning. I'm lucky enough to be in a financial situation that allows me to replace/upgrade parts when troubleshooting. Bad parts are thrown out or rebuilt.
1994 PAIR System
1994 Charcoal Canister (used, replaced when...
If I factor in the tires, it comes closer 13. The 16-17 was after the larger tires.
I'll try running higher octane, it might make a difference at this altitude.
That's one of the frustrating things... If I hadn't achieved it at the beginning, I wouldn't be upset about the mileage now. But instead, I had something special and it was taken from me!
I usually run 85 octane and prefer costco or chevron gas.
Yes and No... I got 16-17 MPG on the freeway after the lift and tires, but before the rack and tent. However, I regularly remove the rack and tent when they're not being used, and the mileage stays in the 12 range.
285/75/16R
When I first got my cruiser a few years ago, it got incredible fuel economy, 16-17MPG freeway. During the past 2 years, it's steadily decreased, now hovering around 11.5 around town and 12 on the freeway.
During this time I have done the following to try to address:
EGT Disable (not removed)...
Yes, tank and purge are appropriately connected.
I believe Costco uses E10 (10% ethanol).
I disconnected both hoses to verify that there was vacuum on the intake manifold (purge) side, and when disconnecting the tank side, it was releasing vapor.
It is worth noting that I did find that my...
Hate to bump an old thread, but I swapped my CC to the VC120 and this weekend after a quick drive up about 4000 feet over an hour in 90 degree weather caused a very very high amount of tank pressure. Did I do something wrong?
This is the exact same concept as the Singer Porsche's with a very comparable effort involved. In the case of the Singer, the cost is usually around $750k AFTER the donor car. $400k for a frame off restoration and effort that goes into a turn-key 100% integrated swap that retains stock...