odd idea on tps mounting

[n xntrx volvo]

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[Mueller]

going to a custom intake. linkage is odd, and abnormal. Anyone tried to adpat it to the gas pedal instead? The same concept as a me7/ etb car, just with a cable also. Might work better for me. Tps should last longer without the heat and vibration, and there would be less wiring mess and space issues on the tb(s).

that is basicly how a drive-by-wire setup works...

the biggest issue would ensuring that it is always 1:1 between the TPS and the throttle body...don't want to have any false readings due to slop in your linkage or cable system...

 

[n xntrx volvo]

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[Tabor]

MAPdot might be easier.

 

[MrBill]

MAPdot might be easier.

but they're supposed to used together, right?

I mean even in the megamanual it says the TPS is there so the second you mash it, accel enrichments happen instead of waiting the ~1/10s for the MAP to read the new air.
It sounds like a good idea, but what kind of throttle body are you planning on using?
Since you're custom, I'd go on summit racing, and find a ___ throttle body, and use the integrated TPS with it.
Like this?
http://store.summitracing.com/partd...859865+4294859864+4294891681+115&autoview=sku

 

[n xntrx volvo]

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[Tabor]

but they're supposed to used together, right?

Supposedly, TPSdot > MAPdot, but some people seem to have gotted MAPdot working perfectly. A quick search reveals this thread.

 

[MrBill]

lolz my thread!
Good info, forgot all about it

 

[Hank Scorpio]

I could never get mapdot to work well on garys 140. The map changes for an NA are "huge" for relatively little change in tps. Probably work better on a turbo car but haven't tried yet.

Aaron dont see why it wouldn't work on the gas pedal

 

[benflynn]

ms2-e has some new fangled accel

 

[linuxman51]

MAPdot might be easier.

mapdot is not so good with an itb car, the pulses even through a chamber are too inconsistent. better to run hybrid alpha-n if you're not going to use tps dot.

slop in the linkage isnt such a big deal for tps readings, on a boosted car tps angle has little to do with load.

 

[mikep]

As long as it is a round cable spool, it should work.

It would still only be accurate if the linkage was at the same angle and radius on both the spool and the throttle arm.

 

[n xntrx volvo]

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[James10952001]

It doesn't really have to be accurate. So long as it's relatively consistent at the lower and upper extremes, it could be completely nonlinear and still work fine. It's only used for idle control, flood clear, and accel enrich, none of those require any significant degree of precision.

 

[JohnMc]

And it doesn't really need to be that precise even for hybrid alpha-n, as long as it is consistently un-linear. The fuel map would just have to be set accordingly.