adaptive mapping question

[12Esc]

Hi,

I recently had a FFF2 head fitted to my Tuscan. I noticed that (even some time after a reset) some of the adaptives are quite high (30%+). Normally, that means that something is wrong. Throttle bodies were balanced and all HT leads seem to be ok. Could this be because of the additional power that is available from the FFF2 head (and simplex chain conversion)? I does sound logical that some additional fuel is needed compared to normal?

Any suggestions are welcome.

Regards,
Maurice.

[dpd3047]

have you set cam timing correctly, also ignition might need adjusting, if the cams have more lift and duration than standard it will need remapping.
Standard lift at the valve inlet and exhaust is .416 thou less tappet clearance and 268 duration, i would ring RG and ask for tech info on the set up hope this helps.

[cinquecento]

Which cells are you seeing a large value(s)??.. Maybe post a picture of both adaptive screens.

[12Esc]

cinquecento said:

Which cells are you seeing a large value(s)??.. Maybe post a picture of both adaptive screens.

Will do.

[12Esc]

Attached is the mapping data.[
url]|http://thumbsnap.com/jHLzBM1A[/url]


Any hints are welcome. Thanks!

[12Esc]

the second bank:

[Alan Kee]

they're strange readings .. one bank is trimming to throttle 10 (which you'd expect) and the other is trimming to throttle 11, and both are trimming over 4000rpm, which is the normal tvr cut off point .. is your car non-standard in the ecu department?

[12Esc]

It has the TVR power decat chip.

[cinquecento]

Maurice,

I have compared your readings to mine.. and with only a few exceptions have similar results.

See here

I understand my Sag to be std.. and too see table entires over 4000 rpm.

From the ECU diag s/w you can "Save MAP to disk" which creates a file with the adaptives tables saved..that way you can reload them and compare if you choose to reset them.

BTW: is you question based on curiosity (as mine was seeing I recently got the Sag) or do you have a problem.?

[12Esc]

There is not really a problem that i know of, but i read that corrections of 30 percent are not ok. That is why i would like to know if this means something is wrong (or: can be better).
I re-adjusted the throttle pots tonight. Nr 6 was lower then the others. That is fixed now. Then i reset the throttle setting in the ecu and reset the maps. After a short drive, values seemed about the same as above...

[malman]

12Esc said:

There is not really a problem that i know of, but i read that corrections of 30 percent are not ok. That is why i would like to know if this means something is wrong (or: can be better).
I re-adjusted the throttle pots tonight. Nr 6 was lower then the others. That is fixed now. Then i reset the throttle setting in the ecu and reset the maps. After a short drive, values seemed about the same as above...

You only have 2 throttle pots and they should read evenly when you open the throttle on the throttle display screen. When you say number 6 was lower are you talking about airflow with a syncrometer?

[12Esc]

the two throttle pot displays are close to each other. I was indeed talking about the synchrometer value that was a bit lower on pot 6 (around 7, while the others were around 10).

[DonkeyApple]

How are you finding the low down running/idle with the FFF2 head? I assume it has the high cams etc?

[12Esc]

Idle is very smooth. And low down running is also ok.
To be honest: i don't know which cam was used. The default with the FFF head?

[DonkeyApple]

The FFF2 uses a very high cam to give the engine real straight 6 racing characteristics and seemingly massive pull over a wide range from about 3000 up.

The trade off is that you lose grunt low down, but that's a V character trait more than anything, or a diesel

[12Esc]

it is true that to really feel the power you need to go into higher revs. But i don't really know how the power delivery is with a standard engine (i only drove mine for a couple of weeks before the rebuild and it wasn't running very well).

[DonkeyApple]

12Esc said:

it is true that to really feel the power you need to go into higher revs. But i don't really know how the power delivery is with a standard engine (i only drove mine for a couple of weeks before the rebuild and it wasn't running very well).

It's very similar except there seems to be an awful lot more happening above 3500.

What you seem to lose is a bit of tractability below 1000 rpm.

The syvecs system on top really smooths it out and allows bespoke mapping to your style.