Acceleration Off The Line

[Namgun]

Hi guys,

I own an 06 auto skyline.

I was wondering if you guys have the same problem.

When I step on the accelerator from a stopped position I feel that the power delivered to my rear wheels aren't always the same...

Sometimes I feel a split second lag... sometimes it is much more responsive...

I've noticed that it launches more consistently when I'm in drive, with VDC switched off. Whereas on a GOOD day the semi auto's 1st gear launches alot harder... On a BAD day however, the semi auto launch isn't as good...

To be more precise, sometimes I can hear my tyres screeching (Good day) and I feel more stronger pull. But this isn't the case all the time...

my 0-100km/h ranges from roughly 5.9 - 6.9 (stop watch times not precise) depending on how well the launch is...

usually in drive, I've been averaging around 6.2 I think...

Do any of you guys have the same problem? i.e. through mods? ECU?

if so, is there a way to fix this problem?

p.s. I have no mods, it's stock.

your reply would be appreciated

Nam Gun (Paul)

[projectx]

So many factors. It could be down to road temperature, road surface, air temperature. Try to test it on the same piece of road in the same conditions and see if you still get varying results.. Also a/c on/off might contribute..

[VNS 24]

Looks like you are after performance mods.

1. Cat-back exhaust

2. Pod-filter or K&N panel filer

3. Motordyne plenum spacers

4. Grounding kit

5. Light wieight rims with semi-slick tires

6. Aftermarket suspension (Lowered)

7. Aftermarket brakes

These should see you get extra 10-20rwkw.

If not satisfied, turbocharge or supercharge is the go.

[Namgun]

Looks like you are after performance mods.

1. Cat-back exhaust

2. Pod-filter or K&N panel filer

3. Motordyne plenum spacers

4. Grounding kit

5. Light wieight rims with semi-slick tires

6. Aftermarket suspension (Lowered)

7. Aftermarket brakes

These should see you get extra 10-20rwkw.

If not satisfied, turbocharge or supercharge is the go.

Thanks for your reply ~

what does the grounding kit do?

and what are these?

2. Pod-filter or K&N panel filer

3. Motordyne plenum spacers

sorry, i'm a noob on the mechanical side of the car

[Namgun]

So many factors. It could be down to road temperature, road surface, air temperature. Try to test it on the same piece of road in the same conditions and see if you still get varying results.. Also a/c on/off might contribute..

Thanks for your reply, it is much appreciated

Air temperature is a new one !

on the same road it is little bit better.

I was referring to the actual power to my rear wheels, cos if I still get the same power I would be getting wheel spins if i lack grip right?

[VNS 24]

Thanks for your reply ~

what does the grounding kit do?

and what are these?

2. Pod-filter or K&N panel filer

3. Motordyne plenum spacers

sorry, i'm a noob on the mechanical side of the car

Hi mate,

1. Installing a grounding kit claims for HP increases and "smoother shifting".

2. Aftermarket pod filters are said to improve performance and fuel consumption, It also sound real grunty under the hood and gain a little power from NA engine.

Pod filters are illegal unless installed properly with heat shield.

K&N panel filter replaces the stock panel filter and it just helps more clean air for engine to breathe. It doesn't make much grunt or gain power as pod filter.

3. Basically, aftermarket plenum spacers (Brand : Motordyne) either increase the overall height of the stock plenum or remove the downward slope design of stock plenum, allowing more volume and greater airflow to all cylinders. Higher airflow is needed to achieve more power.

Hope these help.

Edited December 5, 2010 by Victor.T

[rx3ip]

is that possible that the drive by wire not consistant .. this happens to my BMW X5 as well , if I push the X5 accelerator lightly before flooring it , it pulls very hard but if I floor it straight away at the light sometimes it doesn't give full power

My gt-8 accelerates hard from stop everytime as long as I push it all the way to the floor ... yeah

[scotty nm35]

^ exactly. The throttle motor has a slow ramp, especially if you are under 30kph. The M35 Stagea has a similar pita setup.

A good ecu reflash (like a Nismo ecu) will be the only way to fix it.

[Namgun]

Hi mate,

1. Installing a grounding kit claims for HP increases and "smoother shifting".

2. Aftermarket pod filters are said to improve performance and fuel consumption, It also sound real grunty under the hood and gain a little power from NA engine.

Pod filters are illegal unless installed properly with heat shield.

K&N panel filter replaces the stock panel filter and it just helps more clean air for engine to breathe. It doesn't make much grunt or gain power as pod filter.

3. Basically, aftermarket plenum spacers (Brand : Motordyne) either increase the overall height of the stock plenum or remove the downward slope design of stock plenum, allowing more volume and greater airflow to all cylinders. Higher airflow is needed to achieve more power.

Hope these help.

Thanks alot Victor,

you've been a great help !!

[Namgun]

^ exactly. The throttle motor has a slow ramp, especially if you are under 30kph. The M35 Stagea has a similar pita setup.

A good ecu reflash (like a Nismo ecu) will be the only way to fix it.

Thanks for your info,

but aren't ecu set-ups around 2.5k ??

[VNS 24]

Thanks alot Victor,

you've been a great help !!

You are welcome, mate. Always a pleasure to help out a fellow V-series owner.

With the ECU reflesh, I can't help you as I don't know anything about it. But I am sure there will be someone you can.

Good luck. Enjoy your V.