K04 Vs K03 Spool Up - MK5 Golf GTI

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Author Topic: K04 vs k03 spool up (Read 11423 times)

Offline Sammy

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K04 vs k03 spool up
« on: March 24, 2012, 10:51:53 pm » From my understanding I take it the k04 turbo kicks in a little later but stays strong till later in the rpm then the k03s, at what revs do both turbos start kicking in? Logged GTI MK5 with all the gooodiesK04 power going on soon!

Offline stealthwolf

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Re: K04 vs k03 spool up
« Reply #1 on: March 24, 2012, 11:34:52 pm » From memory, the K03 was about 1700 and the K04 around 2400. Logged The GTI isn't just a machine. It's very much a living, breathing thing.

Offline Sammy

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Re: K04 vs k03 spool up
« Reply #2 on: March 25, 2012, 02:18:56 am » Quote from: stealthwolf on March 24, 2012, 11:34:52 pm
From memory, the K03 was about 1700 and the K04 around 2400.
Does that mean k03s has a better power output low down and the k04 slightly later? That also must mean the k04 is a better cruiser for the motorway as you can maintain the national limit and still not be in boost and therefore save fuel over the k03s too? Logged GTI MK5 with all the gooodiesK04 power going on soon!

Offline stealthwolf

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Re: K04 vs k03 spool up
« Reply #3 on: March 25, 2012, 02:30:47 am » The GTI had virtually no lag - at least that's what the press used to say at the time. I've achieved 41-42mpg by having the car at 60mph constantly over a 150+ mile journey. I think at 70mph, the turbo has kicked in. Logged The GTI isn't just a machine. It's very much a living, breathing thing.

Offline rich83

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Re: K04 vs k03 spool up
« Reply #4 on: March 25, 2012, 02:54:46 am » Save fuel with a K04..... You must be joking!!Ko4 spools up about 2500 and goes like a stabbed rat until 7000rpm, ko3 will tail off. Logged https://www.justgiving.com/thenational3peaks

Offline james

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Re: K04 vs k03 spool up
« Reply #5 on: March 25, 2012, 08:49:05 am » Quote from: richwig83 on March 25, 2012, 02:54:46 am
Save fuel with a K04..... You must be joking!!Ko4 spools up about 2500 and goes like a stabbed rat until 7000rpm, ko3 will tail off.
:signLOL: so true Logged My build - K04 @ 400bhp (on some rr) ;) http://www.mk5golfgti.co.uk/forum/index.php/topic,43854.0.html

Offline danishmkvgti

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Re: K04 vs k03 spool up
« Reply #6 on: March 25, 2012, 09:04:24 am » Quote from: richwig83 on March 25, 2012, 02:54:46 am
Save fuel with a K04..... You must be joking!!Ko4 spools up about 2500 and goes like a stabbed rat until 7000rpm, ko3 will tail off.
actually if you look at most graph of the K04 it loses breath from about 5200rpm upwards. Logged Over the top mod list ;o)

Offline Sammy

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Re: K04 vs k03 spool up
« Reply #7 on: March 25, 2012, 11:15:19 am » Quote from: stealthwolf on March 25, 2012, 02:30:47 am
The GTI had virtually no lag - at least that's what the press used to say at the time. I've achieved 41-42mpg by having the car at 60mph constantly over a 150+ mile journey. I think at 70mph, the turbo has kicked in.
Is that with k04 you achieved that? Also is your gti standard? Logged GTI MK5 with all the gooodiesK04 power going on soon!

Offline alackofspeed

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Re: K04 vs k03 spool up
« Reply #8 on: March 25, 2012, 11:30:57 am » At a constant cruise @ 70 both engines will be pulling a vacuum. Logged

Offline Sammy

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Re: K04 vs k03 spool up
« Reply #9 on: March 25, 2012, 11:33:39 am » Quote from: alackofspeed on March 25, 2012, 11:30:57 am
At a constant cruise @ 70 both engines will be pulling a vacuum.
Sorry what does pulling a vacuum mean? Logged GTI MK5 with all the gooodiesK04 power going on soon!

Offline stealthwolf

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Re: K04 vs k03 spool up
« Reply #10 on: March 25, 2012, 04:20:02 pm » ED30. Stage 1. Similar figures when stock. Logged The GTI isn't just a machine. It's very much a living, breathing thing.

Offline RedRobin

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Re: K04 vs k03 spool up
« Reply #11 on: March 25, 2012, 05:45:55 pm » Quote from: Sammy on March 25, 2012, 11:33:39 am
Quote from: alackofspeed on March 25, 2012, 11:30:57 am
At a constant cruise @ 70 both engines will be pulling a vacuum.
Sorry what does pulling a vacuum mean?
....In broad terms, vacuum relates to turbo pressure. The vacuum causes the turbo actuator to close and hence the turbo to work and give extra power. That's the simple explanation. Logged On facebook: https://www.facebook.com/robin.procter.50Throbbin' Red Mk5 GTI DSG with too many mods to list - Have Fun but Safe Journeys!

Offline Sammy

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Re: K04 vs k03 spool up
« Reply #12 on: March 25, 2012, 06:19:15 pm » Thanks for clearing that up Robin much clear understanding :smiley: Logged GTI MK5 with all the gooodiesK04 power going on soon!

Offline Sammy

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Re: K04 vs k03 spool up
« Reply #13 on: March 25, 2012, 06:21:51 pm » Would a converted K04 spool up the same as a edition 30 or does that just depend on the map? Logged GTI MK5 with all the gooodiesK04 power going on soon!

Offline Tamiyoman

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Re: K04 vs k03 spool up
« Reply #14 on: March 25, 2012, 08:24:14 pm » My basic understanding of turbos is that the larger the impellor fan/wheel in the turbo the later it spools up, I cannot see ANY map changing the way a turbo spins up to speed to create boost, a map would only alter the amount of boost once its spooled up.Correct me if im wrong :popcornsoda: Logged MK7 Golf R, Pure White 3Dr DSG, Had since 10/06/14
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