1st to 2nd Turbo Lag

[sie77]

just a quickie.

I never really noticed it before (saying that its rare that i floor it in 1st gear) but when changing from 1st to 2nd at around 4-5k revs i get a huge amount of turbo lag im talking what feels like an eternity until the turbo kicks in again in 2nd gear.

In reality its more than likely a couple of seconds lag, is this normal?

I have a cupra 180 btw.

Thanks.

 

[lordgibbness]

Hmm, not really... should be pretty instant with it being on boost at those revs.

 

[mrwookie]

just a quickie.

I never really noticed it before (saying that its rare that i floor it in 1st gear) but when changing from 1st to 2nd at around 4-5k revs i get a huge amount of turbo lag im talking what feels like an eternity until the turbo kicks in again in 2nd gear.

In reality its more than likely a couple of seconds lag, is this normal?

I have a cupra 180 btw.

Thanks.

Where do your revs sit when you engage 2nd gear??

 

[sie77]

Not sure what the revs are at but ill try it in the morning and see.

Only happens from 1st to 2nd no other gear and doesnt happen at all if i change lower down the revs.

 

[mike2926]

from a standing start my 225 gets very bogged down and has turbo lag when i pull of with a bit of speed (i.e floor it lol)

 

[lordgibbness]

from a standing start my 225 gets very bogged down and has turbo lag when i pull of with a bit of speed (i.e floor it lol)

Are you releasing the clutch with less than 3.5k on the tacho? It can bog down if the revs are low.

 

[Markyboyt]

What dump valve are you running?
I had something similar when I got my car, when accelerating hard on the up change the turbo would stall and it lost all power for 2-3 seconds then it kicked back in. This was caused by the stock dump valve being knackered. If yours is running stock then its worth testing it.

 

[sie77]

What dump valve are you running?
I had something similar when I got my car, when accelerating hard on the up change the turbo would stall and it lost all power for 2-3 seconds then it kicked back in. This was caused by the stock dump valve being knackered. If yours is running stock then its worth testing it.

Actually you could be right, until recently i was running a 007P but when that broke/wasn't opening i put a standard black plastic one on as i didn't think it would make much difference unless i had it mapped.

I'll order another forge and see how that goes.

 

[Markyboyt]

Actually you could be right, until recently i was running a 007P but when that broke/wasn't opening i put a standard black plastic one on as i didn't think it would make much difference unless i had it mapped.

I'll order another forge and see how that goes.

Did you try servicing your forge DV?
If you put a post in the forge section they will sort you out with a service kit, they dont really break, merely get worn.
How long has your standard one been on and was it a brand spanker when you refitted it?

 

[sie77]

Did you try servicing your forge DV?
If you put a post in the forge section they will sort you out with a service kit, they dont really break, merely get worn.
How long has your standard one been on and was it a brand spanker when you refitted it?

It has been on 2 or 3 weeks now but i only noticed the problem today but like i say its rare i ever floor it in 1st gear so not sure if the issue was there with the forge.

No i haven't tried to service it but i'll head over to the forge section. The original one wasn't new a friend gave it to me as he changed to a forge a few months back.

 

[Markyboyt]

I'd guess its probably knackered. if your using normal (reusable) jubillee clips to hold it on then i would definitely be taking it off and testing it in the meantime. its a real easy test, plush the plunger up and cover the smallest pipe onto it where the vacuum hose goes on the top, then keeping the top hole covered release the plunger, it should hold in place until you release your finger, it may drop 5mm or something but thats ok. Mine dropped all the way back and made a whoosh as the air rushed through the split diaphragm.

If none of that makes sense I will try and talk you through it better lol

 

[mike2926]

Are you releasing the clutch with less than 3.5k on the tacho? It can bog down if the revs are low.

its does it at what ever speed i come of at, it is like it can put the power to the wheel for a few second or so......i have a forge 007p and t is only a few months old.

any thing i can do?

cheers

 

[lordgibbness]

Does your traction light flash - could be the TCS sapping power?

Try turning off the traction control and do some tests.

From a standstill, hold the engine at 3500rpm and release the clutch quite quickly. The wheels should spin up a little, but you shouldn't lose any power. Maybe try 4k too. You should find the sweet spot for quick getaways.

 

[Markyboyt]

Does your traction light flash - could be the TCS sapping power?

Try turning off the traction control and do some tests.

From a standstill, hold the engine at 3500rpm and release the clutch quite quickly. The wheels should spin up a little, but you shouldn't lose any power. Maybe try 4k too. You should find the sweet spot for quick getaways.

Different system Id imagine but same. I have noticed in my cupra that acceleration is improved if I turn off the traction control especially from a standing start, even though with it on the light wasn't flashing (unusual I know lol) it still seems to be moderating the engine output.

BTW I quoted your post lordg because you mention the TCS but the reply is obviously not directed at you lol.

 

[sie77]

Eventually got round to servicing my forge 007p and it has done the trick, no turbo lag at all

Thanks for your help.

 

[Pacey]

do you think this could be the case with my cupra tdi? as mine has started to lag BIG TIME! it does not kick in till between 2.5-3!! ??

Thanks in advance