turbo lag, boost leak and popping boost pipes!

[bigdirtyturbo]

Hi there just recently got my first cupra r 225. I'm finding the turbo is only coming on strong at around 3.5k / 4k. I can hear it spooling up much sooner but it only starts pulling hard at these revs. It hits 1.5 bar and stays there. Is that the right pressure? Also I hear the bov going off at the lowest of revs, ie pulling out of junctions parking etc, or maybe it's wastegate flutter and the bov isn't working?
The car has a normal sized fmic, and cda air box. And normal sized forge tip.
Anybody can tell me what the norm is for these bam engines, laggy? No boost low down? Etc
Thanks

 

[jackoni]

Dont have a Cupra R, just a cupra....

But you should definitly be on boost before 3.5/4k!
1.5 bar sounds like its been mapped to me?

 

[bigdirtyturbo]

I can't be sure if it's been mapped or not. I was told it had been done but have no evidence. Being mapped should surely reduce my lag no? The car previously had a straight through exhaust fitted, with cat. But it was removed before I got it. That's not likely to give me lag though is it?
Cheers

 

[Bouncerbeater]

It should be showing boost from 2.5k or so with full boost by 3k I think. Will check some logs and confirm

 

[Bouncerbeater]

Yep, checked some logs I did not so long back and the above is pretty much right for mine. 1.5 bar seems a lot of boost so definately mapped I would say
You say a normal sized FMIC but lcr has twin intercoolers one either side, is this what you have ?

 

[bigdirtyturbo]

It has only the fmic. it is the same size as the large central grill it sits behind, more or less.
It's definitely making boost earlier, but nothing happens till 3.5k. Lots of turbo noise before hand and the gauge is reading boost, then it just takes off.

 

[Bouncerbeater]

Has it got a stock exhaust then ?
Sounds like a wellycooler or the like (good)
Boost leak ?

 

[bigdirtyturbo]

I thought boost leak. But wouldn't it be losing power throughout the revs? Also the bov goes off a lot at low revs/boost which makes me think it's holding it's pressure. Unless a pcv leak or something. But I can't understand why that would give me so much lag and turbo noise before it takes off.. Just can't think what it could be , could the n75 be failing? Or bov malfunctioning? Got a forge 008 on it's way just in case. And yes it's a stock exhaust, I've got the milltek centre section it had fitted, but the previous owner sold the back box??? Would it make a such difference?
Thanks for the help

 

[bigdirtyturbo]

And the fmic is smaller than a wellycooler.

 

[Bouncerbeater]

I'd be looking for leaks first and go from there. No fault codes ?

 

[SlimsLCR]

I thought boost leak. But wouldn't it be losing power throughout the revs? Also the bov goes off a lot at low revs/boost which makes me think it's holding it's pressure. Unless a pcv leak or something. But I can't understand why that would give me so much lag and turbo noise before it takes off.. Just can't think what it could be , could the n75 be failing? Or bov malfunctioning? Got a forge 008 on it's way just in case. And yes it's a stock exhaust, I've got the milltek centre section it had fitted, but the previous owner sold the back box??? Would it make a such difference?
Thanks for the help

For a start a stock exhaust will reduce the speed which the turbo spools up, stock cats are a big restriction, I had straight through pipe, went stock for mot, noticeable difference down low, however as you can hear the turbo spooling up and nothing happening its not overly likely to be causing a massive problem, I would defo try to rule out boost leak first, easiest and cheapest fix if that's the problem. 225r stock boost should peak about 1.0bar and hold at 0.9 so its defo had a remap! Possibly a bad one???? Just a thought!

 

[bigdirtyturbo]

Well I found 3 leaks today. Brake booster pipe connector near the firewall (big rip), small L shaped pipe connected under the manifold in the centre , and the pipe coming out the carbon canister is broken. All been deleted with 19mm pipe and a t piece, and it's now venting to air. No longer wanted oil in my intake. Just the carbon filter to sort properly. Can it just be bunged?
Car felt much better initially. But now it's popping boost hoses off for fun. Specifically the L shaped one down the driver's side to my intercooler ( which I noticed today is the smaller type forge one. Unfortunately the forge piping kit is missing, and it's a mix of std and a silicone.
Hope it's not going to be a big problem. Any solutions for stopping popping pipes? Thought about dismantling and cleaning with brake cleaner now pcv is gone. As the joint seemed wet with oil.

 

[SlimsLCR]

It may just be a case of replacing them with new pipes and clip them mate, the extra boost is showing!! Is it showing any more than the previous 1.5bar out of interest?

 

[bigdirtyturbo]

It spiked to 1.5/ even 1.6 once, but now boosts at 1.4, when the pipe ain't popping off!
I've seen the sfs upper hose kit on eBay at 69 quid. Worth a go? With new alloy connectors. It has the heavy duty bolt clamps. Funny enough that's where it's pooping. Maybe the alloy connector is bad? Any idea of the internal diameter?

 

[bigdirtyturbo]

It spiked to 1.5/ even 1.6 once, but now boosts at 1.4, when the pipe ain't popping off!
I've seen the sfs upper hose kit on eBay at 69 quid. Worth a go? With new alloy connectors. It has the heavy duty bolt clamps. Funny enough that's where it's pooping. Maybe the alloy connector is bad? Any idea of the internal diameter?

 

[Bouncerbeater]

You said it's got an aftermarket intercooler on so therefore I doubt a hose kit is going to fit. It's a question of measuring up and purchasing what you need. Diameter could be a couple of different sizes depending on what's on there, may even need a reducer type.

 

[bigdirtyturbo]

Has the std top hoses still place