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Author Topic: Turbo lag  (Read 4179 times)

Offline oceanic-green

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Turbo lag
« on: 27 July 2012, 09:13 »
What can be the causes of turbo lag on a stage one remapped 1.8t. ?

Thanks
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Mods: R-Tech custom remap, Beachbuggy K250 Turbo, Forge 007 DV, RAMAIR Jetstream 108 induction filter, silicone piping throughout, R-Tech Supersize TIP, 42 Draft Stealth Catch Can, N249 bypass, Ported Manifold, Toyo Sports FMIC with 2 & 1/2 pipes, Custom made full turbo back exhaust & 2 & 1/2 " downpipe and 200 cell sports cat. BAM injectors, Turbosmart Boost Gauge, BBS CK Wheels, 312mm Brembo front discs and pads, Carbon canister delete and last of all, a liquid cube!

Offline pickles

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Re: Turbo lag
« Reply #1 on: 27 July 2012, 09:22 »
restrictive pipework maybe ?
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Offline oceanic-green

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Re: Turbo lag
« Reply #2 on: 27 July 2012, 14:23 »
Quote from: pickles on 27 July 2012, 09:22
restrictive pipework maybe ?

not in my case,

There is a very noticeable turbo lag in mine. Can a broken actuator cause this to happen?
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Mods: R-Tech custom remap, Beachbuggy K250 Turbo, Forge 007 DV, RAMAIR Jetstream 108 induction filter, silicone piping throughout, R-Tech Supersize TIP, 42 Draft Stealth Catch Can, N249 bypass, Ported Manifold, Toyo Sports FMIC with 2 & 1/2 pipes, Custom made full turbo back exhaust & 2 & 1/2 " downpipe and 200 cell sports cat. BAM injectors, Turbosmart Boost Gauge, BBS CK Wheels, 312mm Brembo front discs and pads, Carbon canister delete and last of all, a liquid cube!

Offline Wazzzer

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Re: Turbo lag
« Reply #3 on: 27 July 2012, 18:39 »
Could be. The actuator needs to be strong enough to hold the wastegate shut until the desired boost is reached
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Offline oceanic-green

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Re: Turbo lag
« Reply #4 on: 27 July 2012, 18:43 »
Quote from: Wazzzer on 27 July 2012, 18:39
Could be. The actuator needs to be strong enough to hold the wastegate shut until the desired boost is reached

Thanks, is there anyway I can test this?
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Mods: R-Tech custom remap, Beachbuggy K250 Turbo, Forge 007 DV, RAMAIR Jetstream 108 induction filter, silicone piping throughout, R-Tech Supersize TIP, 42 Draft Stealth Catch Can, N249 bypass, Ported Manifold, Toyo Sports FMIC with 2 & 1/2 pipes, Custom made full turbo back exhaust & 2 & 1/2 " downpipe and 200 cell sports cat. BAM injectors, Turbosmart Boost Gauge, BBS CK Wheels, 312mm Brembo front discs and pads, Carbon canister delete and last of all, a liquid cube!

Offline Chris.

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Re: Turbo lag
« Reply #5 on: 27 July 2012, 18:53 »
vagcom log the duty cycle.

What boost you pushing and when are you on full boost?
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Offline oceanic-green

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Re: Turbo lag
« Reply #6 on: 27 July 2012, 19:01 »
Quote from: Chris. on 27 July 2012, 18:53
vagcom log the duty cycle.

What boost you pushing and when are you on full boost?

I am getting about 15 psi now, when I last looked.

What is the "duty cycle" ?

Thanks
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Mods: R-Tech custom remap, Beachbuggy K250 Turbo, Forge 007 DV, RAMAIR Jetstream 108 induction filter, silicone piping throughout, R-Tech Supersize TIP, 42 Draft Stealth Catch Can, N249 bypass, Ported Manifold, Toyo Sports FMIC with 2 & 1/2 pipes, Custom made full turbo back exhaust & 2 & 1/2 " downpipe and 200 cell sports cat. BAM injectors, Turbosmart Boost Gauge, BBS CK Wheels, 312mm Brembo front discs and pads, Carbon canister delete and last of all, a liquid cube!

Offline Chris.

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Re: Turbo lag
« Reply #7 on: 27 July 2012, 19:10 »
How hard the N75 valve is having to work to meet the boost as required by ecu.
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Offline oceanic-green

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Re: Turbo lag
« Reply #8 on: 28 July 2012, 07:20 »
Quote from: Chris. on 27 July 2012, 19:10
How hard the N75 valve is having to work to meet the boost as required by ecu.

Thanks. I do have a spare N75, so I will try it. It is the original c one.

What block do I need to log for it

Thanks
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Mods: R-Tech custom remap, Beachbuggy K250 Turbo, Forge 007 DV, RAMAIR Jetstream 108 induction filter, silicone piping throughout, R-Tech Supersize TIP, 42 Draft Stealth Catch Can, N249 bypass, Ported Manifold, Toyo Sports FMIC with 2 & 1/2 pipes, Custom made full turbo back exhaust & 2 & 1/2 " downpipe and 200 cell sports cat. BAM injectors, Turbosmart Boost Gauge, BBS CK Wheels, 312mm Brembo front discs and pads, Carbon canister delete and last of all, a liquid cube!

Offline oceanic-green

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Re: Turbo lag
« Reply #9 on: 29 July 2012, 15:37 »
I have not had chance to do the logging yet, but I do notice a kind of flutter/flickering sound after the turbo whistle when I take my foot of the accelerator. What could this be?
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Mods: R-Tech custom remap, Beachbuggy K250 Turbo, Forge 007 DV, RAMAIR Jetstream 108 induction filter, silicone piping throughout, R-Tech Supersize TIP, 42 Draft Stealth Catch Can, N249 bypass, Ported Manifold, Toyo Sports FMIC with 2 & 1/2 pipes, Custom made full turbo back exhaust & 2 & 1/2 " downpipe and 200 cell sports cat. BAM injectors, Turbosmart Boost Gauge, BBS CK Wheels, 312mm Brembo front discs and pads, Carbon canister delete and last of all, a liquid cube!
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