R34 / Gt25 Question

[fkcf]

hi,

i have two questions relating to a 98 r34/gt25.

Firstly- what is the verdict on tip-tronic, ie performance in comparison to auto/manual.

Secondly- does any body know where to find out about throttle bodies, aka trumpet?

thanks.

[32GTRB]

tiptronics are pretty boring. my cars a tiptronic and its nothing like a manual. mind you my car does hold the gears and dznt shift up ever (even if your banging against the redline), however it does shift down if your going too slow, say at 7kms it would shift into 1st. personally i dont think japanese auto boxes are very good. my friend has an auto s15 and the gearbox is shithole

[Abo Bob]

An n/a skyline is not a performance car. Get a SSS pulsar or some little hatch or maybe a n/a Supra for a bit of go.

[pixel8r]

An n/a skyline is not a performance car. Get a SSS pulsar or some little hatch or maybe a n/a Supra for a bit of go.

are you suggesting a sss pulsar or n/a supra is any more a performance car than a n/a skyline??

either way, to reply to the initial post, i have a s2 stagea tiptronic (same engine and gearbox as r34 gtt) and stock the auto is what you'd expect from an auto. the gear changes are quite normal for an auto but I found that the 1st to 2nd change in mine was quite slow and at higher revs it took a while to actually find 2nd (ie. from start of the gearchange till actually hitting 2nd was sometimes longer than 1 second).

So I got a valve body upgrade (aka 'shift kit') fitted ~$440 including trans service, and its great now. still not comparable to a manual, but IMO the very best an auto can get. You do feel a slight clunk as it goes from 1st to 2nd but its hardly noticable and you dont notice the later gear changes at all. But put your foot to the floor and it will give the usual delay while the ecu figures out what gear you want, and then bang - you're in the gear and you're off - in a split second after that. To explain it another way, instead of riding on the torque converter for a bit between gears, you're actually in the gear immediately.

If you want manual performance, get a manual. But if you would prefer an auto (for whatever reason - i prefer autos because 80% of the time i'm driving to/from work in peak hour traffic) then get a shift kit. It will clunk a little on the 1st-2nd gear change though - so if you prefer a real smooth ride then leave it stock.

As for tiptronic - i rarely use it. Holding my foot flat makes it change gears at just over 6000rpm (could get maybe 600-700rpm more with tiptronic but it hits revlimiter so quick i find its easier not to). And the auto will learn your driving style so if you kickdown a lot, you will master it through the accelerator without needing to use the tiptronic shift. All a matter of preference and a feeling of control i guess.