selespeed performance - Alfa Romeo Forum
You are currently unregistered, register for more features.    
Thread Tools Search this Thread
(Post Link) post #1 of 4 Old 13-11-08 Thread Starter
Status: Keeping the 147 clean, supercharging the MX5
AO Member
feef's Avatar
Join Date: Sep 2008
Location: United Kingdom
County: Cambridgeshire
Posts: 113
Images: 2
selespeed performance

Some quick searching hasn't really turned up the answers I'm looking for, so scuse me if I'm going over old ground.

The gear-change speed in my 147 is around what's quoted (0.8 of a second), but I do notice that at high revs, it changes much quicker.

This leads me to wonder if one of the variables in gear-change speed is engine speed, and the rate at which the revs drop (or rise in the case of downshifts, but downshifts are less of an issue).

Are there simple ways of speeding up the selespeed action?

Would lightening the flywheel, and so increasing the rate of change of engine-speed, mean the selespeed would operate quicker?

If so, would it also require any modification to the selespeed ECU?



When a passenger of the foot, hooves in sight, tootel the horn trumpet melodiously

words and pictures:
engineering and technology :
Habbydays : online haberdashery :
feef is offline  
Sponsored Links
Status: -
AO Member
zambugsky's Avatar
Join Date: Jul 2007
Location: Congo, Democratic Republi
County: -
Posts: 848
Images: 3

Member car:

None yet

Re: selespeed performance

Yup, the Selespeed does shift faster when the accelerator pedal is pushed down all the way and the engine's over 5000 RPM. I think having a faster shift at lower RPM would make it very jerky and even more uncomfortable than it already is. If you engage City mode, you'll notice that the shifts occur at around 3000 rpm and they're slower than in manual mode, but it doesn't jerk the car.
zambugsky is offline  
Status: -
AO Member
Join Date: Sep 2008
Location: France
County: Midi Pyrenees
Posts: 22
Re: selespeed performance

On mine, the hardest part was getting over the tendency to let off the gas when up-shifting. Now I'm tickled pink with it. I may be wrong, but short of finding a slightly used Ferrari unit, I don't think you'll find a cost-effective way of getting it to shift faster.
Jack B is offline  
Status: -
AO Member
wasil's Avatar
Join Date: Mar 2008
Location: United Arab Emirates
County: Dubayy
Posts: 582

Member car:


Re: selespeed performance

Just drive really fast and it will shift quicker!
wasil is offline  

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Alfa 147, 156 & GT

performance , selespeed

Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

For the best viewing experience please update your browser to Google Chrome