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Removing AFM, what to do about temp sensor?
Posted: Sat Jan 29, 2005 4:37 pm
by bmacf
Has anybody replaced their AFM yet and found an alternative temp sensor? I seem to recall that Peter dismantled his AFM to get the temp sensor out of it. I'd prefer to keep my AFM (intact) in the trunk and use some sort of GM temp sensor. Anbody have luck with that yet?
And I need to find some kind of 3.25" tube to go from my throttle body to the air filter. Anybody got a good source?
Bill in MD
Milano 3.0 now a squirter
Posted: Sun Jan 30, 2005 1:16 pm
by P.Webb
Yep. Vibrant Performance.
They make a 3" 45deg tube that fits right onto the stock TB with the silicone coupler. It has a hole drilled in it already that the GM temp sensor screws right in to. Plug the wires from the temp sensor into the AFM connector.
The tube is about $35. While you're at it, see if you can find a way to get cold air into the engine. It will help a lot as you'll see from the IAT on the datalog.
-Peter
Posted: Sun Jan 30, 2005 3:35 pm
by bmacf
Thanks a lot Peter. I think you told me about Vibrant one time before. I'm moving to a 164 throttle body (with alfa 155 tps) and its a hair over 3" in dia. I'd guess those 3" silicon couples would stretch. That looks so darn simple I might just have it installed by the spring track school season. They even have vacuum tubing fittings at Vibrant!
Right now I have a pretty hokey heat shield around my cone filter (currently connected to a bmw AFM- needs to go). Looks like I need to look at my own MS datalogs to see what the IAT is.
Thanks for the tips - hopefully I'll have something together by the end of February.
Bill in MD
Posted: Fri Feb 04, 2005 12:34 am
by Michael
Here is my test system. I used Greg's kit, just replacing the AFM with a section of 3" exhaust pipe. I got the temp sensor and harness connector from a spare AFM I had. This way, I reckon that if MS ever fails, I can swap in the AFM and ECU to get the car drivable in minutes.
Once I have it tuned and finalized, I'll clean up the wiring harness.
I'll also have to rig a cold air intake system, possibly throwing out the inner high beam headlights.... I can see on the datalogs that my intake temps are 20 degrees F higher than ambient.
I’ll test the car without the AFM tomorrow