Sweettt!!!!!!!!

[Ratman667]

Originally Posted by s1120

Ya, I have heard the Saturns like it. Im thinking of just cutting a few holes in the duct that goes over the rad infront of the exoust. Figure that will pick up warm air.

That will work a little. I had a SC-2 that had a high of 42MPG (mine was a 5 speed). What I did was cut that tube going over the radiator and using flex tubing extended it to the header (I replaced the exhaust manifold with the tube header from a '92).

If I remember correctly, yours has the open grill front bumper. Blocking that will help on the highway.

[Project84]

I disagree that your cutting holes in the resonator will help. Sure your intake temps will rise 10-20*F, but that's not enough to see any significant MPG increase tank-to-tank.

Engineer it any way you want, but you want a real HAI for a Saturn... mine went from 33mpg highway max to 46mpg highway. Never used P&G or EOC. Just mild drafting and no cruise control, HAI and SG-II. You want the SG viewing *f IA to monitor your HAI temps, I've seen that above 150*F is best, keeping it between 170-180 is amazing for MPG but the car will feel sluggish. I got an additional IAT sensor from a junkyard and just cut/solder in the new one to help extend the wires, then drill/tap the TOP of the air cleaner box so your sensor will read actual temp entering your engine, rather than reading under the filter where you'll be getting a mix of fresh and warm air.

Also, if you've owned your Saturn long, you probably know about the ECTS, Engine Coolant Temperature Sensor. The stock ones are made from some type of plastic, they're garbage; inaccurate and WILL fail and leak everywhere eventually. Get a brass tipped one and you'll be good to go.

[s1120]

Oh ya!! I know about that ECTS!!!! Check out the start of my MPG graph!!!!


So what advantege does moving the IAT make???

[Project84]

your car reads actual intake temps, and adds fuel accordingly (less fuel is added for higher reading intake temps)

[s1120]

OH OK. I will start there, and see what happands. I want to one change at a time, so I will wait till next tank, and then do it.

[s1120]

Well that idea tanked!!!!

I did my best to drive for max MPG, and I got 3 mpg LESS then last tank!!!!!!!!!!!! WTF???????????

[theholycow]

I've sometimes had that result while trying too hard.

[rust collector]

Hmm, same here... I just can't drive cars to get good mpg...
The trucks at work is easy, but not my little car...

[GasSavers_BEEF]

your last tank was a short fill up. only about half what you usually do. it may have been a difference of the pumps or something. I noticed that this fill up seems to be inline with the rest of yours.

it isn't a definite but it is a possibility. I was going to suggest a scangauge but noticed that you have a '94.

[s1120]

OK, well I changed my style a little. Im giving a little more throttle at start ups. Figure I will get to cruze speed faster. The rest I am keeping the same.

I also noticed I am not costing as well, so I am going to check if there is a issue somewere, or if I have a tire going soft.

I realy want to hit 35mpg and get my avg over 30!!!