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N/A AFM on a T2?

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Old Sep 25, 2003 | 10:00 AM
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N/A AFM on a T2?

well, i never got the AFM i bought off of Rotarific so i was wondering if i could use the S5 N/A one i have now until i can find another T2 AFM. Ive heard that the N/A one is tuned differntly, would it cause it to run rich/lean?
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Old Sep 25, 2003 | 12:20 PM
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It will not work. I had the same exact thing almost happen when I found out that the N/a and TII sensors are DIFFERENT ones.
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Old Sep 25, 2003 | 12:39 PM
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It will technically work just fine, but the car will run leaner. So you will need something like the S-AFC to properly tune and compensate. As a "stop gap" measure, it will work well enough so you can drive the car. Just don't push it.
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Old Sep 25, 2003 | 01:40 PM
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Aaron's got it right - I've seen a car run just fine with the NA AFM. I wouln't be out romping on it, but the car should be driveable.

Dale
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Old Sep 26, 2003 | 12:35 AM
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does anyone know where rotarific has been? he wont answer any of my emails or pm's about the AFM, and i paypaled him the money($57) about a month ago.
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Old Sep 26, 2003 | 01:45 AM
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Originally posted by Aaron Cake
It will technically work just fine, but the car will run leaner. So you will need something like the S-AFC to properly tune and compensate. As a "stop gap" measure, it will work well enough so you can drive the car. Just don't push it.
Technically it will run richer
(he was asking about putting a N/A one on a turbo computer)

That is of course up until around ~7psi where the N/A afm maxes out...... then all sorts of **** would hit the fan.
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Old Sep 26, 2003 | 04:00 AM
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Yep, the softer spring in the NA AFM would deflect easier than the Turbo one, so the cone would move further for the same airflow, meaning too much fuel.
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Old Sep 30, 2003 | 11:18 PM
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aparently i screwed up then.
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Old Sep 30, 2003 | 11:23 PM
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Originally posted by NZConvertible
Yep, the softer spring in the NA AFM would deflect easier than the Turbo one, so the cone would move further for the same airflow, meaning too much fuel.
Would that applies also to the flapper style AFM ?
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Old Sep 30, 2003 | 11:26 PM
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Originally posted by Aaron Cake
It will technically work just fine, but the car will run leaner. So you will need something like the S-AFC to properly tune and compensate. As a "stop gap" measure, it will work well enough so you can drive the car. Just don't push it.
Aaron- I was thinking....


If you can wire an S5 AFM for the S4 can you do it backwards? from the S4 AFM to an S5 AFM. We have an S5 TII but can't find the AFM for it. But S4 TII afm's are a bit more available. could that be done? how any links?
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Old Oct 1, 2003 | 12:30 AM
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my friend ran an n/a afm on his TII for a few months with no problems. I think he said it didn't feel any different when he switched to a TII one either.

It'll work, but I personally would try to stay off the boost until you get a TII AFM.
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Old Oct 1, 2003 | 01:27 AM
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Originally posted by Rizla+
Would that applies also to the flapper style AFM ?
Yep, the two different types work in basically the same way.

Last edited by NZConvertible; Oct 1, 2003 at 01:32 AM.
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Old Oct 1, 2003 | 03:29 PM
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Yeah, sorry. Richer....I was thinking the other way around....

Not sure why you would want to put an S4 AFM on the S5, but it could be done....The S4 AFM is more restrictive, and again, you will need something to correct the fuel curve.
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Old Oct 1, 2003 | 09:14 PM
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the point would be to just see if the engine is blown or not.
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