Related to the Bowling & Grippo Fuel Injection system.
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Michael
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Bosch TPS for GTV6 / Megasquirt

Post by Michael »

A Porsche 944 Turbo TPS looks like a bolt-on proposition to replace the GTV6 TPS. It’s kinda pricey ($100) - maybe because it’s made for a Turbo car and therefore better sealed, or maybe just because all Por$che parts seem to cost a fortune :)
Does anyone have a Bosch part number that is also a bolt-on? I hear the Volvo 850 TPS works. I just want to have this signal for data logging since I'm using the MAP signal, but maybe will want to experiment with the TPS signal in the future.
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Post by aggarcia »

Michael,
Did you ever buy and use a 944 TPS? does it work correctly with the MS?
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Post by Michael »

Hi Andrew:

I have bought one, and can confirm that it does fit, but I've not tested it with MS yet. My current project is on hold until I can tune it better. Actually, I'm planning on building a V3.0 Main Board to replace my current implementation.

Cheers,
Michael
1981 GTV6
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Post by Zamani »

Mike,

What's the advantage of V3 vs. V2.2? Maybe you can sell your board to me? Both can do spark control right?
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Post by Mats »

I recently found out that a TPS from a Delta Integrale fits a TS TB perfectly, not sure if it helps you at all but it maybe someone can be helped by it. :)
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Post by aggarcia »

Is the model you used a 944 Turbo or 944 ? I am looking for a three wire TPS that will give actual throttle movement not on and off like the stock switch.
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Post by Michael »

Zamani wrote:Mike,

What's the advantage of V3 vs. V2.2? Maybe you can sell your board to me? Both can do spark control right?
I think so yes. The 3.0 board is much more robust - a good write up on it here:
http://www.msefi.com/msinfo/ms2/pcb.htm
I like the bit about better support for MS-II and MSnSE - with a direct ignition coil driver built into the board. Its also apparently more resistant to the dreaded tach falsing phenomenon that I fought so long.

Once I have the replacement built, I'd consider selling my 2.2 board. However, its been soldered and de-soldered on quite a bit so I'm not so sure you'd want it :)

The TPS is 0 280 120 400 - for a turbo.

Cheers,
Michael
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Post by bmacf »

FYI, I've got TPSs from a Volvo 850 (950?) turbo and an Alfa 155. Neither are bolt-on additons to the GTV6/Milano throttle body.

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Post by ar4me »

Michael,

I'm looking for a 3-wire TPS (true potentiometer) for my verde with GoTech. The Bosch parts number you listed above seems to have a 6-pin connector, and not a 3-pin connector - pic
From this site

Do you use the 6-pin TPS for your MS? Do you know how to wire it for 3-wire?

Andrew told me he is trying 0 280 120 308 instead - pic. Unfortunately it doesn't show the pins, but from the size you can tell it must be about 3 pins.

Edit: But from the Hugo parts list 0 280 120 308 appears to be a TPS SWITCH and NOT a TPS POTENTIOMETER - check out page 70 for symbol description and 71 for Bosch parts number 0 280 120 308. Note that the verde has a 0 280 120 304, if I remember correctly.

Jes
87 Milano Verde - daily driver - Juliet
87 Milano 3.0 Motronic - budget race car - Roxanne
87 Milano 3.7 24v - race car
(Repeat or do as I say at your own risk - be critical)
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Post by Zamani »

Jes,

Autronic uses 3 pin TPS. I'll check the Bosch part number for it today.
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Post by ar4me »

Perfect Zamani!

Jes
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87 Milano 3.7 24v - race car
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Post by enzo »

you can use the 0280122001...but it's not a bold-on solution....you con found it on the 155 V6, or 164 QV...
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Post by ar4me »

The idea was to find a bolt-on true potentiometer TPS with 3-pin connector. Lets see what Zamani turns up. Zamani? Worst case, the 944 Turbo is a straight bolt on, and then it's just a matter of figuring out which of the 6 pins to use.

Jes
87 Milano Verde - daily driver - Juliet
87 Milano 3.0 Motronic - budget race car - Roxanne
87 Milano 3.7 24v - race car
(Repeat or do as I say at your own risk - be critical)
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Post by Zamani »

Part no. is 0280 122 004
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Post by ar4me »

Zamani, is that a bolt-on to the milano throttle body? My reason for asking is that it maps to the same Huco part (138601) as the one suggested by Enzo, which he says is not a bolt-on... You can see the Huco part on page 76 of the catalog referred a few posts up.

Jes
87 Milano Verde - daily driver - Juliet
87 Milano 3.0 Motronic - budget race car - Roxanne
87 Milano 3.7 24v - race car
(Repeat or do as I say at your own risk - be critical)
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