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Ditching the AFM helps the low end AMAZINGLY.. (archive)

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Posted by Stan on September 06, 2001 at 08:23:46:

In Reply to: Re: how is an e30 m3 stock? speedwise? posted by Roops on September 06, 2001 at 07:34:36:

The below 3500-400o range is pretty gutless bone stock.

A chip will help quite a bit.

But. If you ditch the air flow meter (Via mass air conversion, or other engine management options) the whole torque curve moves up, especially below 4000 and above 7000. Part throttle torque explodes.

I have measured up to THIRTY NINE (39)percent more torque at lower throttle openings compared to stock at lo revs. This means that the throttle does not feel as dead at low load / low RPM as it does stock. No, total WOT torque does not go up anywhere near that amount. The big difference is cuz at low load low RPM the throttles have to open more in order to pull some air past the spring loaded AFM door. A variable restrictor plate deal. This is very noticeable seat of the pants.

I'm running alpha-n with MAP sensor enhancement for great street driveablilty - no restrictive AFM.


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