Got an 3.5 litre, auto TF. Gearbox done only 140,000 klms. Very smooth, no flaring, new oil etc. Only one problem. When I'm being racer boy and doing the gears manually, if my foot is pretty well flat to the floor, 1st will always hold till 6 grand regardless off if I push the shifter to second or not. This is not good for me. I have dynoed my engine and power drops off after 5500. Only way I can get it to go to second is to back off the accelerator temporarily, which kinda defeats the purpose.
Any ideas on why this happens?

Thanks.

i have noticed that their is a deley on my mates tippy between changes.
try shifting earlier, like 5000 rpm

I'd say buy a manual? You bought an auto to have it do the gear changing for you, to do it yourself anyway defeats the purpose. That said tippy is a bit of fun lol

Thats kinda how a auto works buddy :nuts: . If you floor it the gears will change higher in the rev range. Not to mention there is no such thing as a 3.5L TF.

thats just the transmission working properly. It wont automatically shift to 2nd when you put the selector into 2. It will change up as far as 2nd.

There is a 3.5 TF if you've done a conversion parker.:D It doesn't matter how early I shift, it just holds on. Oh well, looks like that's how the auto does its thing. Thanks.

It's because you have your foot flat to the floor !! It'll do the the exact same thing in 'D'.

If you're shifting from 1 -> 2, 2 -> 3, etc., the TCU will still decide at what speed and RPM to upshift...that's the way it's meant to work.

There is a 3.5 TF if you've done a conversion parker.:D
Why would you convert to 3.5 and not manual at the same time? Thats what most people do.

Anyway if you like the autos maybe get a Tippy out of a TF or TH Sports and fit that, then you'll have your gear changes when you want em.

Why would you convert to 3.5 and not manual at the same time? Thats what most people do.

Anyway if you like the autos maybe get a Tippy out of a TF or TH Sports and fit that, then you'll have your gear changes when you want em.

apparently its not just a straight swap of box... other things need to be changed as well.. and some people don't op for a manual conversion as there are so many things involved that needs to be modified and changed.

as well as, there are apparently some 3.5L TF's that came factory, rare as hell but i have heard of it being spoken and if you go on say RACV online insurance estimate, there is an option to pick a TF 3.5L

the 4sp auto and 4sp tippy box are the same its just the gear selector,e cu and tcu that would be needed to be changed which is a lot of headache to do so you might as well do manual conversion

Anyway if you like the autos maybe get a Tippy out of a TF or TH Sports and fit that, then you'll have your gear changes when you want em.

Wouldnt the tippy from the TF **** itself if it was mated to a 3.5L.

1st will always hold till 6 grand regardless off if I push the shifter to second or not. This is not good for me. I have dynoed my engine and power drops off after 5500.

Well Ideally you should be shifting a bit after peak power anyway. lol

Yeah, finding the dollars is the problem. Would save money to do everything at once but eventually, the budget decides. My peak power of 155hpatw peaks at 4200 and flatlines too 5500 the starts to drop off. Would prefer it to change at 5600 about, but as evryone has said, thats why you get a manual. In time, in time.:) Thanks all.

back off the go pedal a bit might help it change earlier and then plant it again

Anyone know if the TCU can be adjusted to alter shift patter

Well Ideally you should be shifting a bit after peak power anyway. lol

Exactly, you dont want to shift at peak power, as as soon as the revs drop, power will drop, significantly. Its much better to hold on a bit, as power will drop off slightly, but not as much as it would by chaning gear and going to a much lower rpm.

BTW as already said, I thought you had a tiptronic, but as you dont, auto is working properly, just because its in '2' doesnt mean it will be in 2nd gear, this is just the highest gear the car will use.

Ollie

""Exactly, you dont want to shift at peak power, as as soon as the revs drop, power will drop, significantly. Its much better to hold on a bit, as power will drop off slightly, but not as much as it would by changing gear and going to a much lower rpm.""



Yes, good point that.Better to have stay in first and have it drop from 155 to 140hp from the 5500 to 6000 grand mark, than shifting earlier to second and drop from 155 to 100hp.