Bad manners !!

[Red and Single]

My car has bad manners at low speeds and while on very light throttle, it makes me look like a learner driver sometimes !!  :spank  

Here\'s the spec...

Mild Street Port
T04R Single Turbo
External Wastegate
Standard Injectors
Uprated Fuel Pump
Sard FPR
Apexi ECU

I guess I\'m talking about two seperate behaviours here...

Firstly while driving along in traffic , i.e. when idleing in gear (0% throttle) the car can sometimes begin to hunt slightly which causes a kangaroo effect, very annoying as I sit in traffic with her every day  :reallymad

Secondly, when cruising in any gear ( but it\'s more obvious in the lower gears) and on very light throttle (especially downhill ) the engine seems to stutter and cough, as if to say either put your foot down or back off completely.  :xconfused

My question is this, are either of these behaviours likely to be down to the mapping of the car or is it the modifications I have causing the problems ??

Car was tuned by Reworx before I owned her and goes like stink when I\'m brave enough :god  but I wish I could iron out these niggles  :xconfused

[ScuttleRX]

May be way off here, but it *might* be that as you\'ve uprated the fuel system its not possible to dial down the fuelling enough at very low revs so runs a bit rich, i.e lumpy

Keep providing guesses to your threads but I must get an A for effort

[Red and Single]

Hey all guesses are more than welcome, thanks for your input

[Red and Single]

It must run very rich because it stinks of petrol at idle etc etc. :rollin

[ScuttleRX]

Hey all guesses are more than welcome, thanks for your input

lol, no worries, without being patronising are you 100% that your running standard injectors, might back my guess up if you\'ve got some big old 1680cc\'s in there Seems a little strange that everything else fuel wise is uprated bar them...

[John Yorke]

Secondaries will only be in the equation when the engine is at WOT, should not affect low revs / crawling in traffic.
The thing you have to remember is your car is modified, and the modifications are such that it is not conducive to be subjected to chugging along in trafic :rolleyes: you will be clogging up the plugs with carbon and at every opotunaty you should be trying to clear those plugs.
If you have to use your car as your daily commute I would look to be getting it de-tuned, seems an awfull waste to be sitting in traffic with that spec.
HTH

[ScuttleRX]

Secondaries will only be in the equation when the engine is at WOT

lol, good point, im tired...

[Red and Single]

Secondaries will only be in the equation when the engine is at WOT, should not affect low revs / crawling in traffic.
The thing you have to remember is your car is modified, and the modifications are such that it is not conducive to be subjected to chugging along in trafic :rolleyes: you will be clogging up the plugs with carbon and at every opotunaty you should be trying to clear those plugs.
If you have to use your car as your daily commute I would look to be getting it de-tuned, seems an awfull waste to be sitting in traffic with that spec.
HTH

Thanks John,

I clear the plugs as often as I can :chat

She gets redlined regularly ( at least twice every trip ) and at least once with WOT if the weather permits.

I don\'t "have" to use my FD as a commute, but I enjoy driving it so I do :chat

Just wishing to iron out the bugs.

[Red and Single]

lol, no worries, without being patronising are you 100% that your running standard injectors, might back my guess up if you\'ve got some big old 1680cc\'s in there Seems a little strange that everything else fuel wise is uprated bar them...

I know we\'ve ruled the secondaries out of the equation, but regarding your other point...I know, it is bizarre. :spank

Nice thing is, all it needs is bigger injectors for plenty extra horses :chat

[ScuttleRX]

Nice thing is, all it needs is bigger injectors for plenty extra horses

Yes you\'ve got a nice set-up to build on there

[Ricco_04]

Dont know wether this helps or hinders but I have both of those \'problems\' and the mota\'s standard!  :confused:

[Red and Single]

Dont know wether this helps or hinders but I have both of those \'problems\' and the mota\'s standard!  :confused:

hmmmmmmm    interesting.....  :rollin

Now I\'m confused !!

[ScuttleRX]

you had a service lately chaps? sometimes it the simple things like old plugs....

[Red and Single]

Servicing is pretty much upto date, so should be ok on that front...

I need to change the fuel filter and the plug leads as they are the only things not recently (i.e. within 1500 miles) changed.

[ScuttleRX]

hhmm, just thought id check its always the simple things you think of last, well in my case anyways

Seem to really notice difference every time you get new plugs in these cars, supposed they get coked up fairly quick