T1000

Has anyone else with a classic UK Turbo got slow acceleration in 5th gear? It feels fairly quick in all other gears but 5th seems really sluggish.

The car should be running at least 260bhp on its TDO4 so it shouldn't feel as slow as it does in 5th?

Would another remap solve this issue or is it due to gearing?

Thanks

scooby1doo1

iTrader: (7)

about .2 gees in 5th .7 in first

TonyBurns

iTrader: (3)

I think its due to physics

Tony

T1000

I know it's going to accelerate slower than in other gears. I guess the point I was trying to make is that it accelerates very well in other gears but 5th gear isn't rapid

allsop83

iTrader: (9)

No idea what the gearing ratios are in UK Turbos (i.e. short 1-4 for acceleration and long 5th for cruising...) which could be why you feel such a big difference but I guess it has a lot to do with what speed you are trying to accelerate from in 5th aswell.

My P1 is running 330bhp and 5th does feel slower as is natural I guess..........when you get to 5th gear speeds you are fighting wind resistance aswell......

T1000

thanks, That's interesting about your tuned P1 also not extremely quick in 5th. It probably has altogether different ratios to mine anyway

dazza80

iTrader: (1)

Mine pulls like a train in 5th and i aint even taken the downpipe cat off yet! 60-100mph is pretty quick if the boost is up??
Funny one this

Nick_Cat

iTrader: (5)

When I had mine remapped by JGM (ecutek 3) he said you'll notice a difference in 5th - and I did. Much less of a cruising gear now - that's what I would have referred to it as before.
Nick

hixxys STI

mines the same 60-113mph in 5th is quite quick in mine. it is an import tho if that makes a diffrance and its an sti with short gearbox

T1000

Thanks for the feedback.

scoobyricht

iTrader: (4)

mine does 80 - 100 in 5th in about 5secs, classic wagon with a few mods running about 260-270 i think.

hixxys STI

mine is limited to 113mph (import) i dont know how long it takes me to go from 60mph in 5th to 113mph but all i can say is, my speedo go's up quicker than the rev counter

P555SBR

iTrader: (1)

Conversely, if I'm on a track and took it to about 125mph in 4th gear then shifted into 5th it doesn't feel too bad so maybe it's lacking torque.[/QUOTE]

125 in 4th mine does that in 5th flat out but it does pickup quick in every gear could be down to your ratio

dave

scoobyricht

iTrader: (4)

T1000 do u have a boost gauge fitted?

T1000

Thanks guys it probably is due to the gearing with 5th gear in particular. I'm surprised how different the gearing is on the sti's. They must feel pretty quick through the gears.

I'll test my in gear time at some point Scoobyricht and will compare to yours, cheers

T1000

sorry, just read last post. Yep I've got a digital boost gauge on the electronic boost controller. Shows about 1.2bar (17.4 psi) at full throttle. The readout on the APEXI Power FC commander seems to say the same

kylejennings05

mines a uk turbo which pulls realy well in 5th

T1000

I filled up on Shell Vpower for the first time today (up until now I've always used Tesco 99) and I couldn't believe how different the car felt to drive. I actually felt quick in every gear today and it was smoother to drive?

I'm really surprised by this, could a different type of super unleaded really make it a lot quicker? If so, I'm not sure I want to go back to Tesco 99 anymore

his-n-her-scoobs

iTrader: (5)

Both our UK MY97 pull well in fifth, on 95RON from the local supermarket.

T1000

Thanks, car seems to drive really well now and has more than enough power! For comparison's sake I might fill up on Tesco 99 again

JohnD

iTrader: (5)

The STi with 6-speed feels even worse! 1-4 with circa 370 is nice! In 5th and 6th the difference, by comparison, is very noticable. You keep having to remind yourself that, as the turbo starts to wake up at over 3k you'll already be doing 80+ For a performance car, 5th and 6th are high ratios.
My sons EVO IX 320 has, by comparison, a much more impressive 6th gear performance.

JohnD

slipstream_uk

iTrader: (1)

My pulls from 60ish in 5th like a train. Hardly ever come out of 5th on long drives. Im talking a lot of B roads aswell, no motorways near me at all.

T1000

Is that on an Sti though mate, as I think they have shorter ratios than the UK cars, and more power?

joz8968

iTrader: (13)

You're right. Even WRX's have shorter ratios/FD - although not as short as STi's - than the 2000 Turbo AWD. Type R/RA's have even shorter gears too!

Also, check out slipstream's profile and his car's spec - hardly a fair comparison to yours lol.

T1000

I must admit I like the pictures in his profile

joz8968

iTrader: (13)

.. Especially the 2nd thumbnail (lucky begger)

T1000

That's the one I meant - although the car is nice too

Sorry Slipstream, back on topic to the 5th gear acceleration..

T1000

Just thought I'd update this thread with my findings lately. I had the opportunity to test the 80-100mph speed in my Impreza the other day and I tried it via the GPS speed several times. Each time it clocked it in 5 seconds !!

cheers

joz8968

iTrader: (13)

Is that with a steady throttle to maintain 80mph, then you slam the pedal to the boards?

T1000

That's how I tested it. It doesn't take much time at to spool up which is quite good.

I've noticed that 5th gear seems to pull well at about 70mph onwards . It's probably only attributed to a bit of turbo lag though