AAN into Ur quattro, 400-450 Bhp Target

[diesel des]

Have a chat to one of the plant guys. Tell them your looking for a vacuum indicator that pops up to show blocked air filters. Or just fit a vacum gauge to the compressor inlet.

Delta p or pressure differential really needs a special dual port gauge. It measures pressure difference across a system eg intercooler on one gauge, so you don't need to look at them both. Will see what I can dig out..

[Billman]

do the easy part first and check the filter. Simply remove it (beware that nothing goes in)

[URquattroGus]

Havent done a grill test because I didnt have one and worried about sucking something in.

Have changed the air filter though, to Apexi part no 500-022, also put some more heatshielding on whilst there.

Have not driven it yet, biut surely it's got to be better, if not least for the filtration aspects too.

[Bram]

looks good Agnus. Hope the filter is good enough flowing

[Billman]

nice, now go out and make a log

[URquattroGus]

Not that much progrees at the moment. I'm sorting out a couple of small things like new door seals before the 30-130mph day at RAF Marham.


I actually rung and emailed Pro Alloy about coming up with some new intercoolers.

They were helpful enough the first time on the phone and I emailed some pictures.

I left it a few dayus and then phoned up to chase up. That was two weeks ago and I have not heard anything.

Dissapointing really as I was poetntially prepared to spend some presumably quite serious money on some custom coolers.



Wastegate wise, How do I check i don't have creep or some other problem?

I can take the wastegate off, but what scares me is taking it apart or adjusting it as it has been mapped and the spring pre load was adjsuted down for boost control.

Intersetingly they used the origional spring and not the 1.9 Bar one I thought they would use.

Pete Berry fitted new diapragms etc when the engine was built.

Maybe I should order an aftermarket or another wastegate, but surely this means having it mapped yet again!?

[Billman]

Make a log and see how it runs! maybe it is solved

[URquattroGus]

When you say make a log, data log pressure drop etc?

It drives just the same with this new air filter. Maybe a bit better up top end, but that is probably my imagination.

I think there is a problem somewhere else (see above)

[Billman]

With log I mean to see at what RPM does the turbo spool now. I thought you didn't run the car with the new filter.

[URquattroGus]

have been looking at this:

http://www.efiexpress.com/catalog/product_info.php?products_id=56{7}51

Maybe I have some guide wear in the valve I have now?

[newsh]

I've got a spare WG if you want to try it.

[URquattroGus]

I've got a spare WG if you want to try it.

Thanks, my only concern is whether I can replace the wastegate easily, maybe I could count the threads on the existing one?

It's been mapped with that gate, so I would worry about over boosting etc.

Does anyone know if there is anyway around this or do I need to get it mapped for the 3rd time!?

[Billman]

Leave the bolt and the top chamber as is. In the rs2 in stock the bolt is at approx. 11mm measured from the top of the cap. Measure from the top and leave it the same. 0.5mm more or less will not do so much of a difference.

[DJones]

Leave the bolt and the top chamber as is. In the rs2 in stock the bolt is at approx. 11mm measured from the top of the cap. Measure from the top and leave it the same. 0.5mm more or less will not do so much of a difference.

Set it visually as close as you can, do a 4th gear pull (before you take it apart) and record what boost is reached on your boost gauge, and do the same with your new cap/waste-gate and adjust the screw until you get the same reading.

Darren.

[20Vcqdriver]

Not that much progrees at the moment. I'm sorting out a couple of small things like new door seals before the 30-130mph day at RAF Marham.


I actually rung and emailed Pro Alloy about coming up with some new intercoolers.

They were helpful enough the first time on the phone and I emailed some pictures.

I left it a few dayus and then phoned up to chase up. That was two weeks ago and I have not heard anything.

Dissapointing really as I was poetntially prepared to spend some presumably quite serious money on some custom coolers.

Wastegate wise, How do I check i don't have creep or some other problem?

I can take the wastegate off, but what scares me is taking it apart or adjusting it as it has been mapped and the spring pre load was adjsuted down for boost control.

Intersetingly they used the origional spring and not the 1.9 Bar one I thought they would use.

Pete Berry fitted new diapragms etc when the engine was built.

Maybe I should order an aftermarket or another wastegate, but surely this means having it mapped yet again!?

Filter cover looks good and not a million miles from mine though it looks on the small side. I am using a K&N RX2820 rated upto 600bhp so be plenty of spare capacity
Have you thought of using a water to air charge cooler. works really well on mine and is also rated upto 600bhp and keep pipework length short too.