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Hi,

New member and new saab owner here.

I just bought a 97 Saab 9000 CSE 138K. I LOVE this car. Great on gas, fast, classy, very smooth ride and very affordable. I am into it for about 2500 and it is truly a great car. I had a saab specialist in NH go through the car and it is mint. NO car payment, 29 MPG, 0-60 in 7.2 and a comforable ride with a harmon kardon system. Pretty tough to beat!!!

My question is what is the def in the engines of my car and the areo. I know the are both 2.3 turbos. Where does the extra 25HP come from ??? Is it a different turbo charger all together or is it a more aggressive boost strategy coming from the computer??????
 

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haha i recently got mine and havent been getting very good gas mileage because i enjoy stomping on it and shifting at higher revs than i should :confused:. oh well that will stop eventually.:lol:
 

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That is what I said two years ago:cool:

They do seem to get bad gas mileage in town. My girl's cse in town driving only is around 22mpg and my aero on more highway driving is 27mph, even though I get on it a lot!

John
 

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0-60 in 7.2 is fairly conservative. Published figures from the time show 0-60 in more like 6.5 seconds. Wheelspin is the limiting factor from a standing start as the torque is just too much for the front tires and the boost builds so quickly at 2,000 rpm that modulating the throttle and the clutch is tricky. You often get wheelspin and no acceleration or the car just bogs off the line and you get no acceleration. If you get it right though the results are spectacular.


The irony is the better your tires the more likely you get a bogging off the line! The stock Michelin MXM HX summer tires were fairly sticky for a factory tire and the car runs well with them. Pirelli P Zeros would probably be easier to launch. I now have Nokian ZRi summer tires which are not as grippy but allow me to modulate traction for better off the line starts than the stock Michelins. They also grip better at near zero ambient temperatures which is important where I live.

Where these cars really shine is roll on acceleration. The manual Aero is very, very quick once the car is moving. In top gear at 70 mph the acceleration is fierce. I think a manual Aero can run with the big boys at highway speeds. I know a stock C5 Corvette automatic cannot outrun an Aero at highway speeds. Even a 911 could have trouble drawing away.

The extra power comes from more boost at low rpm. The max boost is 1.08 bar for the manual Aero and for the autobox is only 0.81 bar, less in first gear. The only real difference is the bigger Mitsubishi turbo which huffs the extra air. The ECU is adaptive so very minor reprogramming would be required to remove the boost limiter in the autobox ECU. Mind you, I have no idea how it is done but the ECU will be identical except for the software (which is like saying that a woman is like a man except for the hormones, of course.).

It is said that the autobox would cook itself if the 1.08 bar ECU were to be fitted. I think a skilled driver with some idea about drivetrains could keep that ZF autobox in one piece with the 1.08 bar ECU. I suspect strongly that the ZF fialure issues are related to overheating of the transmission oil combined with poor maintenance scheduling. Owners of autoboxes tend to overlook oil changes for the transmission and it is vital to do those to keep a slushbox happy. Mind you I have had my manual transmission fail in my 97 and others have reported the same failure. These engines develop low rpm torque similar to small block V8 engines and the transmissions take a beating as a result, especially in top gear.

If you put platinum plugs into your Aero I think you'll find even more torque is available. I use 6 heat range NGK platinums (or iridiums, they are the same plug as the precious metal center electrode uses both metals.)
 
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