Lazy Skyline

[rondofj]

Hey all just a quick question thats been bugging me lately, my car's always done this but now Im getting annoyed:

Everytime during normal driving from standstill or even low speed, when I put my foot down firmly (but not mashing it) say half throttle, the lazy car hesitates for a second before it starts picking up momentum, a bit like a horse that turns around to say 'fk you' before moving when u prod it.. :S

It takes a good second or maybe more of this before it picks up speed, my accelerator cable is tightened properly, idle is ok, dont think theres any vacuum leaks but dunno? Is this normal and anyone else experience this? What can I do to make it respond INSTANTLY? Cheers R

[Manuel Kasko]

I get it when the cars cold

DVS said it pulls timing but his going to update the cold start next time to get rid of that.

Keep an eye what revs it comes on at.

Mine feels like its towing a trailer until exactly 3000rpm then just let's it go and frees up

[Manuel Kasko]

Oh and also it can do it if your TPS voltage is set wrong. Plug in a consult and see what voltage it's at. Should be .05v at idle

That can cause the delay in throttle response as well.

[AngryRB]

mines always done that too, unless its already on 3000rpm then its almost instant response.

[Manuel Kasko]

Well refer to above 2 posts

But then again you guys better not be talking about turbo lag haha

[rondofj]

Oh thanks man, I will get that checked when I get it tuned again sometime after my turbo upgrade coming soon. It makes sense what u said, pulling timing or TPS not calibrated properly, man it honestly is slower than a light NA Corolla below 2500ish rpms. Slugboat. But once it gets going then its got its own thing. Also when going at say 50-60km/h in third gear and then suddenly giving it fast and hard throttle, it groans for a couple of seconds without doing anything, then it goes okay. But when giving it throttle gradually and nicely it flies hard like it really should..

[Manuel Kasko]

Do you get any jolting?

Or just no power delivery

[GTScotT]

i wondered where you got to.

theres another thread in the FI section that went through a couple of months ago with the answers. i cant remember what it was titled but the guys car was boosting when free revving.. its the same issue. my car also did that.

[rondofj]

Forgot to add, yes it does it below 3000rpms - somewhere like in between 2500-3000 but once past that, it hauls, but it doesnt do it if I prod it light and bit firm, but if u mash the pedal, it will laugh at you first.. And turbo lag lol, not on my stock one..

[rondofj]

Yes I do remember seein that thread title Scott, will have a read if u suggest..

[Manuel Kasko]

Rolls has a thread on it

JEZ and him have been sorting it out go check it

[rondofj]

Do you get any jolting?

Or just no power delivery

No jolts, just no power

[Manuel Kasko]

Lists a fair bit here

http://www.skylinesaustralia.com/forums/topic/401709-weird-idle-problem/page__pid__6399112__st__40#entry6399112

[AngryRB]

seems to be alot in the tuning of cars, when i had my highflow and got it back from mercury, it pulled hard and straight away 2500rpm to 4500rpm when before it would bog down for a second, i was thinking that was the guttered cat but also the duty cycle and settings on the power fc...

is your boost control setup well? dont know if a turbo smart controller is any good, what about an apexi AVCR , you can wake the turbo up a bit more earlier on.

Edited June 18, 2012 by SliverS2

[rondofj]

It boosts no worries to 12psi before 3000rpms if i mash the pedal, but as I said it doesnt pin me back for a coupla seconds or more before it starts pulling. I think my controller is setup well, I noticed harder and faster boosting when I binned my stock dump for the jjr dump/ front..

[GTScotT]

mine was doing it at about 1800 RPM and causing the turbo to start spooling like crazy on free revs.

i cant remember what they concluded the fix to be but yeah, its in there. i think it might be low timing or something like that.

what turbo is on the car ATM? has it been retuned since it was tuned for the stock turbo (if you even changed the turbo now)?

[rondofj]

Its still the stock turbo, I should get my injectors delivered from the US in a coupla weeks then on to mr kando/stao... And now Im getting more sure its a TPS thing too as it depends a lot on throttle input too, hard n fast equals groaning n no power, slow medium n steady throttle input gets me clean strong power. And timing as u say of course

[Dose Pipe Sutututu]

throttle enrichment settings maybe a bit off, i.e. too much fuel or sometimes not enough

But you're saying there's no hesitation, so it maybe over enriched.

* some refer to this as throttle pump