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Triumph Pi Efi Project


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Where is the 204 value at 35/2800 from?

Did Tunerstudio make that nonsense?

 

Anyway, what is a difference to my table is the bigger full load increase over the revs.

and the 3900 and 4500 rows seem to be a bit fat.

If that all is done by TS there might be a mistake somewhere.

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now for the rest of the story, took a trip to shepton yesterday to see paul, and his very impressive vitesse, for a lesson in tunning and using the tuner studio software. as it was a 45 mile trip each way this was a gamble given that the tune has some interesting quirks, but by the time i had tackled a few hills and fast roads the car settled well.

 

The tune map and basic setting where changed to TPS to see how it would responher how it looks after the autotune homeward journey

post-1975-0-56347700-1403472151_thumb.jpg

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here is the 3d view of the map on tps, the first tune was probably mostly due to my erratic and faulty lamba on the first set of maps, things look a bit smoother on the new tps based maps.

 

I would still like to try a map on map too to see how it performs as it runs a bit lumpy on cruise, jumping around from lean to rich

post-1975-0-13095100-1403472433_thumb.jpg

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So the reasons for the funny values in the first table are found.

That opens for the setup now by testdrive with Tunderstudio.

Did you set the cell resistance in autotune to "easy"?

It makes the first steps on the engine faster.

 

If you go for alpha/n (with TPS and rpm) you will have to adjust TPS first.

TPS values than go from 0 (idle) to 100 (full load) precisely

and that can be reastablished later whenever required.

 

So the values on the y-axis represent the TPS and should go from 0-100

and from that start with 0 in smaller steps first and increase steps later:

0-1-2-4-8-12-18-24-32-42-52-65... etc or similar until it fits.

 

I prefer MAP setup over alpha/n unless the wild cam forces you to do.

The reason is a nasty MAP-signal on cams over 280 degrees, that can

not be used for metering. I would check that with a log first.

 

Than I would smooth the signal in general settings and set there the

"MAP Averaging Lag Factor" down up to 25 but only as much as is required.

Reducing that value on the other hand gives a less crispy respone on throttle

and must be cured with a richer accel enrichment.

 

Anyway the mapping looks much better so you are on a good way!

Keep us informed about progress and good luck!

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If you go for alpha/n (with TPS and rpm) you will have to adjust TPS first.

TPS values than go from 0 (idle) to 100 (full load) precisely

and that can be reastablished later whenever required.

 

 

afaik, nope. was confused by my self as i remember that it has to be like this, but never figured out how to do. ts shows only raw adc values if setup for alpha-n. so after tps calibration you can adjust the Y-axis somehow between the min and max adc values.

 

harry

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  • 2 weeks later...

so after getting sidetracked with the tr6 efi conversion i have now actually fitted the efi to the saloon, early signs are good it started first time (after putting some more petrol in it!) just need to wire up the power to the lc1 and then start tuning that too. pictures to follow.

 

The tr6 is starting behave rather well, but it is still way too rich at high revs.

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  • 2 weeks later...

returned refreshed from a week in spain and resumed the pi efi project, wirred in the lc1 and gauge, turned the car on and it ran like sh(t. so changed it to a map i got from nick jones and it ran as smooth as a babies bottom. until the car got hot and i realized i have no fan fitted!

 

so shall sort the electric fan next....

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  • 2 weeks later...

new oil cooler fitted and hey presto no oil leaks anymore!

 

wired up the fan with a relay to a manual switch and fired the car up, it seems to work rather well without having plugged it in to tunnerstudio.

 

I need to try and control the fan with the ms1 v2.2 not sure what mod i need to do, can anybody help.

 

I am using edis, and a relay board so i assume that i can use one of the spare outputs on the relay board to trigger the fan relay

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As said on CT, it is possible.  However, requires a hardware mod in the ECU to use one of the status led driver transistors as the switch (which could then be used to switch one of the spare relays on the relay board.  You may be using a similar mod to talk to the EDIS?

 

There used to be a very clear "how to" on the MS website, which I've completely failed to find.

 

Nick

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That is the circuit that is required.

 

But if not needed the fast idle switch

which is already routed up to the big plug

and has a similar layout can be used

and that is a painless easy action.

 

It can switch up to 1 Amp if I remember that correctly

and can directly switch a relay for the fan.

 

As far as I remember after a long time the MS1 extra software

was not free to connect the fan switch to any of the outputs

but only allows to decide between two, one was the fast idle port and one was a

little connection on the board close to the board where

are some of theses connections (6?) are sitting in a row.

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That's the one for the version 3 board Craig.  Pretty sure Carl is using the 2.2.

 

As Triumph V8 has pointed out above it may be possible to simply re-purpose the fast idle in software which is probably already connected to the relay board.  However, I didn't do this, even though I wasn't using the fast idle output and I can't remember why - I'm usually in favour of the path of least resistance!

 

Nick

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