[Diy_efi] Intake manifold flow testing

[Dave Dahlgren]

The sad part about this problem is that it most likely changes with rpm as well
that is to say they can move around. a rich one at 4500 might be a lean one at
6000.  You could probably verify they stay the same by using some egt probes and
data logging them along with rpm map and tps..Above all i think i would only
want to add fuel.. Best idea is get a better intake manifold.
Dave

"Geddes, Brian J" wrote:
> 
> All -
> 
> In the online community for my car (Mitsu 3000GT), there's a sort of tribal knowledge that says certain cyliners tend to get more air than others because of the design of the intake manifold, and thus run leaner and detonate more frequently.  I don't doubt that this is true...but no one's actually ever done any testing to quantify the problem.  Now that I'm running a standalone EMS, I can compensate for this airflow difference.
> 
> All I have to do, is figure out how much more/less than average each of the runners in the intake manifold tends to get.  Are there companies out there that would do this kind of a test?  Is this something I could find a local shop to do, or would I need to send my intake plenum out to someone to have it tested?  Any suggestions?
> 
> Thanks,
> - Brian Geddes


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