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Old 03-25-2009, 09:32 AM   #31
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that was a concern of mine too so I've been paying attention to my water temp . I have good news it appears IAT has no affect on Coolant temp.
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Old 03-29-2009, 04:06 PM   #32
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Refilled again yesterday after 300.5 miles and took 6.275 gallons of gas to refill. 47.888 mpg with about 100-150 miles of that driving being done in the rain. Seems that if I can use this set up during the summer months I should be able to break 50 mpg in local driving.
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Old 05-06-2009, 01:53 PM   #33
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I'm loving this WAI. Since I started using it mileage is usually running 44-47 MPG on the '88 Escort, and Monday I was going on a venture that was going to be very little stop and go, so I filled up and checked my highway mileage. No error, because I filled the tank to the cap both times. The car got it's best mileage ever of 52.446 MPG. The distance driven was 132.9 miles (by the odometer) with a fill of 2.534 gallons of gas. I also had my GPS in the car and it showed 137.7 miles on 2.534 gallons which comes out to 54.340 MPG which is problably correct, but I've been going by the odometer ever since I started my gas log so I guess I'll just keep posting it that way, since sometimes I forget to turn on the GPS and wouldn't always have an accurate mileage. I think it would have been better had it all been interstate driving, but about 50 miles was 2 lane roads with a couple small towns with traffic lights, but I was able to time out most of the lights getting stopped by only about 4-5 lights. I was driving 50-55 MPH on the two lane roads in the rural areas and 55-60 on the interstate stretch. The best I had ever got before was 50 MPG on about a 700 mile trip several years ago driving 55 MPH and all interstate.
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Old 05-07-2009, 05:16 AM   #34
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That's great to hear...
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Old 05-07-2009, 05:28 AM   #35
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Originally Posted by philip1 View Post
that was a concern of mine too so I've been paying attention to my water temp . I have good news it appears IAT has no affect on Coolant temp.
I've noticed the same thing the only time it seems to warm up faster than before is in stop and go traffic, then I notce the temperature gauge seems to rise a little bit faster.
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Old 05-07-2009, 05:32 AM   #36
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Jay, I think I've read some of your post stating that you have some older cars. Do any of them have the heat riser system? If so you should try wedging the door closed so that all you get is warm air from the exhaust manifold and see what the results are in your case.
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Old 05-07-2009, 02:32 PM   #37
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Yeah, The Buick and Rusty both have the thermac WAI on them. Unfortunately the Buick rarely gets driven long enough to really warm up, so I don't think it would make much of a difference. I think my greatest gain would be getting the torque converter to lock again.

-Jay
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Old 05-07-2009, 05:24 PM   #38
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Jay, I think I've read some of your post stating that you have some older cars. Do any of them have the heat riser system? If so you should try wedging the door closed so that all you get is warm air from the exhaust manifold and see what the results are in your case.
this was "tried" (not to my knowlege) on my 1980 chevette. wow did it not liek it... the temp "sensor" thought it was freezing all the time so it kept the flap wide open to the exhaust shroud and blocked most of the ambient air intake part.

i only noticed when my gas mileage bit the dust hard. at that time i was getting 28-31mpg when that thing decided to keep it open the next few tanks were barely 25-26mpg...was reading a general car maintince book and listed a table of things that could decrease mpg. that was one of them.

i dunno if it was because it was a major air restriction or not (at 55-60 mph its runnin 3k rpm so its suckin alot of air) so i took the temp sensor out and put duct tape over the 2 small holes it had. Been like that for 2 years now. starts fine in the winter, idles fine, but under a load it runs funny and you have to baby it when its still cold. once it warms up a bit its fine.
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Old 05-08-2009, 08:30 AM   #39
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this was "tried" (not to my knowlege) on my 1980 chevette. wow did it not liek it... the temp "sensor" thought it was freezing all the time so it kept the flap wide open to the exhaust shroud and blocked most of the ambient air intake part.

i only noticed when my gas mileage bit the dust hard. at that time i was getting 28-31mpg when that thing decided to keep it open the next few tanks were barely 25-26mpg...was reading a general car maintince book and listed a table of things that could decrease mpg. that was one of them.

i dunno if it was because it was a major air restriction or not (at 55-60 mph its runnin 3k rpm so its suckin alot of air) so i took the temp sensor out and put duct tape over the 2 small holes it had. Been like that for 2 years now. starts fine in the winter, idles fine, but under a load it runs funny and you have to baby it when its still cold. once it warms up a bit its fine.
I had also wondered before I tried it whether it would act as a choke on my Escort and hurt mileage. If your Chevette is not FI, I bet with it sensing the engine was cold it was also closing the choke causing the poor mileage. My Escort is TBI, so it doesn't have a choke.
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Old 05-08-2009, 09:23 AM   #40
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Yeah, that's another thing to consider... WAI / HAI doesn't work on non computer controlled or primative computer controlled cars because they aren't smart enough to lean the car out when the IAT gets really high...
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