Problems While Tuning - Wont Rev In Idle But Will In Gear

[raz0r$harP.UK]

Hey I am currently getting my R32 tuned and currently running into some problems tuning.

Its a GTST rb20det. Running bigger injectors fuel pump turbo etc with a manual RB25 box and Power FC Pro.

Car will run fine in gear but won't rev while it's in neutral.

PFC settings have been checked and appear to be fine.

Any one have any ideas why it would be running fine in gear but not in neutral?

[bogcock]

your neutral cut out switch may be faulty or incorectly wired up

[raz0r$harP.UK]

Hey just some more information... its a really weird problem....

What is happening is when the rear wheels are turning the car is operating fine and it will rev in neutral. such as like after putting it in gear on the dyno then letting it slow down(rear wheels still turning) it will rev okay...

As soon as the rear wheels stop however it won't rev in neutral

Is it possible that this has something to do with launch control on the pfc pro?

*EDIT

He thinks it may be he launch control on the PRO as it only happens when the wheels are not moving. Does anyone know how to access this through the hand controller as he says he cant find the option in there. He has tuned plenty of normal PFC's but none with the pro.

[Beer Baron]

yes, it's the stationary rev limit aka launch control.

[Mr Italy!]

Does it missfire like nuts when your revving it in neutral?

[raz0r$harP.UK]

All is well. Fixed it up now. Was the launch control. Thanks beer baron and bog.

just in case anyone else needs help with adjusting it... checkout

http://www.skylinesaustralia.com/forums/in...howtopic=101353

[paulr33]

what was actually wrong with the launch control settting?

was it lower than idle or something ?

the launch control RPM setting under SETTING is a ceiling RPM limit.

it should only really affect it if you hold the throttle down. ie: while the speed = 0km the rev limit is that alternate setting, i gues it would only be a problem of its too low, or under the idle limit.

[raz0r$harP.UK]

Will look when the car comes back but as the link indicates I believe LC isn't ID'd as such on the controller. Tuner has worked with plenty of PFCs before but not a PFC Pro so wasn't sure how to set it. I believe that LC was set really low, which was why we were getting problems.

[Beer Baron]

Will look when the car comes back but as the link indicates I believe LC isn't ID'd as such on the controller. Tuner has worked with plenty of PFCs before but not a PFC Pro so wasn't sure how to set it. I believe that LC was set really low, which was why we were getting problems.

yep, that's the problem. the stationary rev limit is not always instantly apparent. glad i could help but when you said PFC pro, and wont rev in neutral (ie 0 speed) i knew instantly what it was. i will bill you later for problem diagnosis.