Acceleration problem in 2nd

[Trav Man]

Well I hope you all can help me on this one as I have a VX Berlina LS1 Auto
I take off peddle buried 1st is fine goes up to red line then as it shifts into second it wants to go but it struggles like it's restricted but if I lift my foot then bury it again its all fine and its fine in 3rd and 4th
I have a new gearbox so I was out testing it as I have had this a couple of times before I got the auto rebuilt and it does it with both traction control on and off but normal general driving it's fine even with a little bit of peddle for a quick overtake or something.
Could it be I need a tune or dyno tune as I have done the folowing
Extractors 4 into 1 Stainless with full twin 2.5" Stainless exhaust
SS Cold air intake
new leads and plugs and K&N Air filter
Bigger pipe from MAF to trottle body
Can anyone help on this please as I am driving from Townsville to Melbourne just before Christmas and would like to try and sort it before I leave

Trav Man

[db_notso]

in first for fastest take off go full throttle then 3/4 just before where it should change gear it SHOULD snap second like a mother foooooker
alot of them seem to do this i would love to know why~!
so try a little less accelerator i think that at 100% it holds gear longer in first incase you were loosing it from memory

[Trav Man]

Okay I'll try that as like I said I was testing my new Auto as the old one was slipping like a mother f@#$%r as I was trying out the stally and shift kit to see how it goes.

[Commydoor]

did you change the fuel filter?

[Trav Man]

Yes it has a new fuel filter and I run BP Ultimate

[db_notso]

if it has a stall converter the gear changes will have moved from original shift points
i would just drive in first with less accelerator until it changes
you CAN buy stand alone computers for the transmission but are very expensive and you then get issues with the other computers~

stupid to you maybe but anyway
if in manual select gearing e.g. "1" it wont change from first until it sensors engine failuer e.g over revving for a certain amount of time
i hope you shift linkage is adjusted properly...

[Trav Man]

Thanks for that but as I said on the first post it has done it before I done the auto and I'm not going to the extreme of a stand alone computer for the auto and I hope the shift linkage is adjusted properly as it feels like it is as I have a stage 2 shift kit as the wife drives the car more than myself at the moment.
I'll go give it go on the weekend if I get a chance.

[Commydoor]

try fitting a corvette servo since youve done the shift kit...

[Trav Man]

Got them
Also external cooler, 2 pac H/D clutches, Beast drum shell, H/D piston, 2500 stall, stage 2 shift kit, etc etc.......
I said I want a auto I can't kill with 300 to 350kw as I plan to chase this figure in a year or so as they said it'll hold upto 400kw if I wanted so I'm happy with that but I'll change the stally when I do up the motor

[Thorby]

Trav,

I have an IDENTICAL problem to yours. I posted a thread last week and the guys pointed me to the cats. Will be doing some more testing this weekend keep on it brother we should fix it. Check my post out and see what you think.

Cheers

vt-vx-holden-commodore-1997-2002/153471-vt-wagon-5-7-feels-bit-sluggish-kicking-down.html

[Trav Man]

Thanks for that mate.
I already have 4 into 1 extractors 2.5" hiflow cats into twin 2.5" exhaust only fitted about 9 months ago so I don't think it's the cats as it done it to me with the original exhaust as well