Gtr Million Dollar Question

[donkeypunch]

from the little info we have I would say it's a poor tune. simple as that. the car should not run poorly over a change in altitude of 400m.

hmmm, as stated my STI did the exact same thing, different car different tuner?

[Adriano]

If it is a temp and barometric pressure issue, it could be far more than 5% if none of it is corrected, however 10% still shouldnt be enough, however i have seen it happen without the use of an air temp sensor, basically in summer blowing black smaoke, and lean in winter.

[donkeypunch]

If it is a temp and barometric pressure issue, it could be far more than 5% if none of it is corrected, however 10% still shouldnt be enough, however i have seen it happen without the use of an air temp sensor, basically in summer blowing black smaoke, and lean in winter.

crap, so how is that fixed?

cheers

[paulr33]

how? with a real tune & a real ecu - ie go back to the PFC or get the link installation sorted and tuned properly

if its got a map sensor it should be setup accordingly, along with air temp sensor to correct itself

* WINNER *

[donkeypunch]

how? with a real tune & a real ecu - ie go back to the PFC or get the link installation sorted and tuned properly

if its got a map sensor it should be setup accordingly, along with air temp sensor to correct itself

* WINNER *

yeah but it had a power fc in it before (tuned by another tuner) and it ran sweet till it came to queenstown, then again ran like crap

[Adriano]

Im not sure if you can do anything about the barometric pressure compensation, as that should be built into the firmware of the ecu, however the IAT table makes a massive difference. From what i see a lot of tuners dont think outside the box and realise just how important having an Air temp sensor, and the correct corresponding numbers in the table.

[STATUS]

Im not sure if you can do anything about the barometric pressure compensation, as that should be built into the firmware of the ecu, however the IAT table makes a massive difference. From what i see a lot of tuners dont think outside the box and realise just how important having an Air temp sensor, and the correct corresponding numbers in the table.

Any competant tuner would usually turn away any map based ecu if it lacked an IAT sensor... well around here anyway.

[donkeypunch]

seen he set the tune to run rich (as requested by me) would leaning it off be the first step?

[Adriano]

Any competant tuner would usually turn away any map based ecu if it lacked an IAT sensor... well around here anyway.

Couldnt agree more, but ive seen tuner do installs without them enough to know it happens around here, usually the excuse is the owner didnt want to spend the extra for the sensor and install! Crazy.

[exXU1]

Basic tune -minimal perameters concidered, hard to find a decent tuner at the best of times - good luck.

[donkeypunch]

Basic tune -minimal perameters concidered, hard to find a decent tuner at the best of times - good luck.

hey thanks, i might ask him about the IAT sensor too.

[donkeypunch]

hey there,

just figured out the backfire/hesitation is when boost starts building when its cold, when the engine isnt warmed up

also there is no cold start up set on the LINK either yet?

ideas??????????????????????

[Adriano]

Are you anywhere near rips, i would take it to them. If you can put up screen shots of the settings in the software then it will make it easier.

[donkeypunch]

Are you anywhere near rips, i would take it to them. If you can put up screen shots of the settings in the software then it will make it easier.

hey, no which sucks, about 15 hrs away, bummer though i sponsor Robbie Ward at RIPS, ha.......

will try getting that info

[LTSJayce]

who gets the cash?

Now THAT'S the million dollar question, LOL!