996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

boost lag

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Old Nov 30, 2007 | 10:13 AM
  #1  
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boost lag

Just upgraded to K24's with evo waste gates. As expected, a little more lag than my K16's but much more top end. When I stomp on it, I see 0.2 bar going to 1.1 bar. I have yet to re- flash my ecu for the K24s'.

I used a pressure guage to set the wastegates to start opening at 12 psi.

My question is: At what rpm should I be seeing a particular boost number? Seems like I am only building boost above 3k rpm. I thought with the upgraded wastegates I would see a little more boost earlier.

Thanks

Sameer
 
Old Nov 30, 2007 | 11:13 AM
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I think once you do a proper flash, you will see the K24 work the way they should. Just a thought
 
Old Nov 30, 2007 | 11:59 AM
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You have to flash it.

https://www.6speedonline.com/forums/...d.php?t=104305

I did start a thread while ago about:
From OEM IC -> EVO IC's with K24 more Turbo lag?
with the OEM (no-X50) ICs, K24's, GIAC Stage 4, EVO WG, up-graded Headers, CarGraphic, Gemballa deck lip (feeds more air).
https://www.6speedonline.com/forums/s...ad.php?t=84710

and I must say in 2 different test, same place, 4th gear run 35 mph to 135.

- Under 2,000 RPMS no boost with OEM, 0.1 -0.2 bar with EVO.
- 2,500 0.3 bar OEM, 0.4 bar with EVO.
- 2,800 0.5 bar OEM, 0.6 bar with EVO.
- 3,200 0.9 bar OEM, 0.9 bar with EVO.
- 3,600 1.2 bar OEM, 1.3 bar with EVO.
- 4,200 1.3 bar OEM, 1.3 bar with EVO.
- 4,600 1,2 bar OEM, 1.3 bar with EVO.
- 4,750 1,2 bar to RED line both.

Test was at OEM IC's 56°F and EVO IC's 70°F

Here is a video with OEM IC's:

http://www.youtube.com/watch?v=XvQYrBrdn4A

I hope it helps....
 
Old Nov 30, 2007 | 12:01 PM
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You need a flash ASAP, it will be a dramatic difference!
 
Old Nov 30, 2007 | 12:01 PM
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get the correct flash right away. you are in danger of overboosting the k24s with the k16 flash! definitelly no stomping till you get the correct flash...

Originally Posted by smistry007
Just upgraded to K24's with evo waste gates. As expected, a little more lag than my K16's but much more top end. When I stomp on it, I see 0.2 bar going to 1.1 bar. I have yet to re- flash my ecu for the K24s'.

I used a pressure guage to set the wastegates to start opening at 12 psi.

My question is: At what rpm should I be seeing a particular boost number? Seems like I am only building boost above 3k rpm. I thought with the upgraded wastegates I would see a little more boost earlier.

Thanks

Sameer
 
Old Nov 30, 2007 | 02:44 PM
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3200 rpm is when the K24's start to spool.
 
Old Nov 30, 2007 | 04:56 PM
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Dont run the car without the flash... you may run lean and KABOOM....
 
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