91 SSE, exh/intake/ignition for best MPG
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The MSD 8224 coils ARE hotter than the S2 L67 coils, but NEITHER will give you any more power. They'll only smooth out the idle a bit, and be a bit more efficient through the midrange.
Don't buy new. Go to the wrecker. Any 97 and newer L67 will have the ICM and coils you need. ANY 3800'* ICM and coils will be a benefit.
Don't buy new. Go to the wrecker. Any 97 and newer L67 will have the ICM and coils you need. ANY 3800'* ICM and coils will be a benefit.
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From: Hawaii
Originally Posted by peanutbuttaguts
Willren, I simply asked what others have done and what their experience was pertaining to fuel mileage. I am well aware what the effects of unrestricting a N/A exhaust will do. low end is lost high end flow is gained, this is an obvious. I wasn't aware how dramatic the effect is on these cars because I am not a bonneville guru, this is why I ask questions on this forum.
IN THEORY, a restriction is a restriction, no matter what causes it, period. be it a cat, a smaller diameter restrictor, or a potato, its all serving the same purpose, RESTRICTING THE EXHAUST, yes i understand the cat serves another purpose also, just trying to prove a point.
IN THEORY, a restriction is a restriction, no matter what causes it, period. be it a cat, a smaller diameter restrictor, or a potato, its all serving the same purpose, RESTRICTING THE EXHAUST, yes i understand the cat serves another purpose also, just trying to prove a point.
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From: DETROIT
good point,
Looks like these motors like a little backpressure, I guess I can spring for a new cat.
Im not looking for any horsepower, but I think I am going to swap in the s2 L67 coils and ICM, im guessing thats ignition control module?
Where on the car roughly is the ICM located at? Just so I know when I hit the boneyard.
thanks
Looks like these motors like a little backpressure, I guess I can spring for a new cat.
Im not looking for any horsepower, but I think I am going to swap in the s2 L67 coils and ICM, im guessing thats ignition control module?
Where on the car roughly is the ICM located at? Just so I know when I hit the boneyard.
thanks
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If you use the Type 2 system and the Wires for a 93 Bonneville the install will look like this 
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From: DETROIT
Cool, thanks for the help and the pic. I just got my car running TOP, had to replace the computer. Now I can mess with it a little.
Im going to run the 97+ ICM and coils, along with MSD super conductor wires, and a drop in K&N to start. Im going to check prices on the MSD coils versus new 97+ coils. If they are not a whole lot more expensive I might run them. Im also going to replace the rubber intake hose with a straight 3 in. pipe.
You guys say to run NGK tr55'* in this thing also?
I'll report back after install with pics.
Im going to run the 97+ ICM and coils, along with MSD super conductor wires, and a drop in K&N to start. Im going to check prices on the MSD coils versus new 97+ coils. If they are not a whole lot more expensive I might run them. Im also going to replace the rubber intake hose with a straight 3 in. pipe.
You guys say to run NGK tr55'* in this thing also?
I'll report back after install with pics.
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Glasuan
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Jan 26, 2004 08:48 PM