I have returned from my voyage to the northeast, and I hafta say, my mileage still stinks! I know there were a few folks who wanted a mileage report before and after projection so here it is.
Mileage when I first got the Jeep this summer was @ 14.0 mpg. That was with the Edelbrock carb, no emissions, no cat. I up until the end of the year I normally drove 250 to 450 miles a week in the Jeep, half city, half highway.
After I slapped the cat on to satisfy Ohio, my mileage dropped to 12.0 mpg.
There was a period of about a month between losing my main pulley and installing the pro-jection kit. The weather turned cold, and I had a few things hooked up poorly. My initial mileage with the projection was 8.5 mpg. This included the wasted fuel while tuning the projection at idle.
Before I went to the east coast I went to my buddies house and we checked the timing. It was at 4btdc instead of 8, and we fixed it. I felt I had everything hooked up right, and this little change would adjust any mileage issues.
After totaling my trip mileage (1554), I averaged out to @ 10.5 mpg. I am sure that the cold weather affected the mileage some, but I can't see it making that much of a difference. I am guessing at one of two culprits:
A) I still don't have the projection properly tuned. (very possible)
B) The cat is REALLY clogged because there is no other emissions equipment on board, and needs to be "opened" up.
Any suggestions?
------------------
360 w/Holley Fuel Injection, Edelbrock manifold, NP219, 3.31, 33's, no fuzzy dice (yet)
AND an 86 Corvette & 87 GMC Jimmy (Jimmy soon to be for sale)
Mileage when I first got the Jeep this summer was @ 14.0 mpg. That was with the Edelbrock carb, no emissions, no cat. I up until the end of the year I normally drove 250 to 450 miles a week in the Jeep, half city, half highway.
After I slapped the cat on to satisfy Ohio, my mileage dropped to 12.0 mpg.
There was a period of about a month between losing my main pulley and installing the pro-jection kit. The weather turned cold, and I had a few things hooked up poorly. My initial mileage with the projection was 8.5 mpg. This included the wasted fuel while tuning the projection at idle.
Before I went to the east coast I went to my buddies house and we checked the timing. It was at 4btdc instead of 8, and we fixed it. I felt I had everything hooked up right, and this little change would adjust any mileage issues.
After totaling my trip mileage (1554), I averaged out to @ 10.5 mpg. I am sure that the cold weather affected the mileage some, but I can't see it making that much of a difference. I am guessing at one of two culprits:
A) I still don't have the projection properly tuned. (very possible)
B) The cat is REALLY clogged because there is no other emissions equipment on board, and needs to be "opened" up.
Any suggestions?
------------------
360 w/Holley Fuel Injection, Edelbrock manifold, NP219, 3.31, 33's, no fuzzy dice (yet)
AND an 86 Corvette & 87 GMC Jimmy (Jimmy soon to be for sale)
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