MK5 Golf GTI

All Things Mk5 => Performance Modifications => Modifications & Technical Area => Revo Zone => Topic started by: flashp on September 22, 2013, 09:59:00 am

Title: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: flashp on September 22, 2013, 09:59:00 am
In the last couple of days I had this map put on my car (previously stg 1) along with the following related hardware:

APR fuel pump, Revo intake, Milltek turbo back resonated exhaust, and S3 intercooler.

What I am noticing is (along with the usual induction noises) is what is popularly referred to as 'turbo flutter'. I've read many things about it but not been able to form a clear opinion of my own. Some say it's OK, others not. Has anyone here experienced this? Is it a problem? What is the fix? I don't dislike the noise but if it's better to not be there then so be it. Maybe I have some fine tuning to do with settings?

For reference I've included my plots. I'm having the DSG stg1 map done next week so should get rid of the fall off at the end of the plot where it changed to 5th.

(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi326.photobucket.com%2Falbums%2Fk438%2Fflashp%2FMap22_9_13551_zpsfa84c8e6.jpg&hash=a41a0f0e0dc81674ddeda4b9668ac0250d9cd5ad) (http://s326.photobucket.com/user/flashp/media/Map22_9_13551_zpsfa84c8e6.jpg.html)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi326.photobucket.com%2Falbums%2Fk438%2Fflashp%2FMap22_9_13552_zps818ff255.jpg&hash=3dc288cb1fc11a16468af6c78888fc86a9d9bc9b) (http://s326.photobucket.com/user/flashp/media/Map22_9_13552_zps818ff255.jpg.html)
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fi326.photobucket.com%2Falbums%2Fk438%2Fflashp%2FMap22_9_13553_zps77d29da3.jpg&hash=b3299ead84b8cdda860a9c9940f4eae9d9871622) (http://s326.photobucket.com/user/flashp/media/Map22_9_13553_zps77d29da3.jpg.html)

Thanks!  :happy2:
Title: Re: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: bacillus on September 22, 2013, 10:10:34 pm
http://www.mk5golfgti.co.uk/forum/index.php/topic,70938.msg768382.html#msg768382
Title: Re: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: flashp on September 22, 2013, 10:43:01 pm
Thanks for the link!  :drinking:
Title: Re: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: rich83 on September 23, 2013, 12:39:38 am
Looks like a strong setup from the DYNO.  :happy2:
Title: Re: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: flashp on September 23, 2013, 06:39:54 am
I'm really happy with it  :laugh:
Quite surprised also that if at motorway speeds you set cruise I actually get more mpg...not particularly concerned about this but in exploring the calmer side of its new personality I discovered this.

I had also had a Wavetrac differential fitted which has made a night and day difference and torque steer has been reduced by around 95%, in fact it's practically gone.
Title: Re: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: rich83 on September 23, 2013, 09:05:47 am
The mk5 doesn't really torque steer anyway.
Title: Re: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: flashp on September 23, 2013, 09:34:06 am
It was very apparent on my stg 1 map, even my wife was aware of it from the passenger seat.
Can't comment on a standard car as I had it mapped on my second day of ownership.
Title: Re: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: rich83 on September 23, 2013, 09:38:22 am
I've never noticed it.
Title: Re: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: flashp on September 23, 2013, 09:49:30 am
Hmm....Maybe there's other factors at play??
Title: Re: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: rich83 on September 23, 2013, 09:53:41 am
Dunno. But I can floor it in first or second and the car goes straight ahead, unlike the mk2 focus.
Title: Re: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: GrayMK5GTI on September 28, 2013, 09:15:02 am
Alignment maybe needs looking at? I've never known anyone to notice torque steer on a mk5  :confused:
Title: Re: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: Gra on January 24, 2014, 11:49:16 pm
mine torque steers like a bitch drives me mad especially in the wet trys gripping and throws the wheel to the right lol
Title: Re: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: xjay1337 on January 24, 2014, 11:51:38 pm
Never had torque steer with either my GTI or my TDI which was not far from 400lb ft of torque.

Only time I've had torque steer in a Mk5 was when the console bushes were shot and the whole arm was being moved.
:)

Would be a good starting spot.
Title: Re: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: Pikey Motorsports on January 25, 2014, 04:26:57 pm
Dunno. But I can floor it in first or second and the car goes straight ahead, unlike the mk2 focus.

mk2 rs has bad torque steer?
Title: Re: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: GrayMK5GTI on March 16, 2014, 07:06:16 pm
Dunno. But I can floor it in first or second and the car goes straight ahead, unlike the mk2 focus.

mk2 rs has bad torque steer?

The MK1 RS was known for terrible torque steer with its hardcore diff, the MK2 was a lot better with the Revoknuckle but from what I've read it is still there
Title: Re: Revo stage 2 - turbo flutter or surge, not sure which or why?
Post by: Pikey Motorsports on March 16, 2014, 11:03:57 pm
they do get a small amount but they are very torquey mine wasnt to bad with 470ft/lb