Performance Air Filter for my 97 Bonneville
#12
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Posts like a Ricer Type-R
I'm getting 29-30 mpg with my mods. Virtually every mod in my sig has a positive effect on MPG'*. Things start to change for the worse when you start getting into the valvetrain, but not enough to cancel out your previous work unless you get extreme.
I think a well-tuned Series 1 is capable of slightly better mileage than a Series 2, simply because the hp and tq peak at a lower rpm, so the engine isn't working as hard cruising in OD.
A good intake on a non-supercharged car, using every trick we know for shielding from engine heat, laminar flow, good filtration and IAT location may net you 2 mpg. Let 'er breathe!
I think a well-tuned Series 1 is capable of slightly better mileage than a Series 2, simply because the hp and tq peak at a lower rpm, so the engine isn't working as hard cruising in OD.
A good intake on a non-supercharged car, using every trick we know for shielding from engine heat, laminar flow, good filtration and IAT location may net you 2 mpg. Let 'er breathe!
#13
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I bought this intake off of ebay, No problems with it at all.
http://cgi.ebay.com/ebaymotors/ws/eB...category=38634
its also in your price range. cost me 38 us.
http://cgi.ebay.com/ebaymotors/ws/eB...category=38634
its also in your price range. cost me 38 us.
#14
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Certified Car Nut
If you get less then 30 MPG freeway on an N/A car that'* had a tuneup recently, and a free flowing intake, you're driving too fast!
MPG progressively falls the faster you go above say 75-80 on my car. @ 100+ i burned 1/8th of a tank in about oh 5 minutes...
MPG progressively falls the faster you go above say 75-80 on my car. @ 100+ i burned 1/8th of a tank in about oh 5 minutes...
#15
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Originally Posted by BonneMeMN
If you get less then 30 MPG freeway on an N/A car that'* had a tuneup recently, and a free flowing intake, you're driving too fast!
MPG progressively falls the faster you go above say 75-80 on my car. @ 100+ i burned 1/8th of a tank in about oh 5 minutes...
MPG progressively falls the faster you go above say 75-80 on my car. @ 100+ i burned 1/8th of a tank in about oh 5 minutes...
#16
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Certified Car Nut
Originally Posted by macho_mike21
yeah, but what were your RPMs at 100mph?
The less you accelerate, the best your mileage. That'* why freeways are so good for milage, because you're generally just cruising.
RPMS @ 100? Umm probably 4000+. It sounds good on an open intake and/or exhaust....
#17
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holy crap, 30mpg??? I used to calculate the mpg when my mom drove my bonne [she has a featherweight foot], and I never got past 19.6 mpg. The car has 7 yr old plugs, and original plugs.. and a junkyard coil and ICM, so i'm guessing that is why.. but if I can get that car to have 30+mpg, i'll be getting better gas mileage than my mom'* little 100hp beetle.. .
-justin
-justin
#20
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I just did a trip from Kansas City to Joplin this weekend, aprx 160 miles each way.
At 80 mph with air on and having to slow down and back up for traffic I pulled out 33mpg.
Average combo around town and highway is 24.
This is with 105,000 miles on it, basically stock except the gutted air box.
Tuned this spring.
I don't think it'* doing bad at all.
At 80 mph with air on and having to slow down and back up for traffic I pulled out 33mpg.
Average combo around town and highway is 24.
This is with 105,000 miles on it, basically stock except the gutted air box.
Tuned this spring.
I don't think it'* doing bad at all.