The N80 is run to the Intake manifold already. It's attached to the rubber "T" under the manifold. And I think you could get away with the filter. A buddy of mine ran a filter like that but with the Oem pcv system. When deleting all the valves and the catch can you would be safe to keep it attached to the inlet as nothing should get past the catch can.
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RichLV's UrS4
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Change of plans, gonna leave the stock system intact, just replace the valves with ones from 034 motorsport, replace hoses with silicon equivalents and throw a catch can between cam cover and pressure valve.
Is it a worthy investment to go for a MAFless chip? They are twice the price of a regular one.Last edited by RichLV; 10 April 2015, 12:37.
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So I could use some info on mods. The target is about 300-350 HP, on stock internals. What should be done to achieve that target besides mapping? Power upgrades will come after full engine rebuild. Ebay silicon hoses will be bought as well.
Apprieciate the info!
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Originally posted by RichLV View PostSo at my power target I can leave plastic OEM valves? Just throw in some silicon hoses?'93 Audi 100 Avant - R.I.P
'92 Audi UrS4 Avant - SOLD
'93 Audi UrS4 Avant LPG
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I kept all Oem plastic valves and their fine. The Oem boost hoses however did not hold up to chipped ecu boost. The lower intercooler hose blew right open at WOT. And the upper intercooler although still intact and installed has started to show signs of cracking.
Keep Oem pcv valves
Silicone hoses. EBay is fine that's what I went with.
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Originally posted by Morris400 View Post
The Oem boost hoses however did not hold up to chipped ecu boost. The lower intercooler hose blew right open at WOT. And the upper intercooler although still intact and installed has started to show signs of cracking.
Was the inside of the pipe and intercooler neck thoroughly degreased with a solvent ?
While uprated hoses may be the long term answer, it may allow the op to use his oem hoses for the time being.
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My lower intercooler hose split in the ribs. I had 234k km when it went and the hose was probably the one from 94. I know the oem hoses are ok but when mine went I had to wrap the hose in duct tape and stay out of boost for weeks until new ones arrived. Really a pain in the ***.
As for the silicone Pcv hoses. It will kinda improve the engine bay look but there pretty hidden. Again for the cost vs function...if it ain't broke it don't need fixin. Just my 2cents. I kept all oem hoses minus the 3xmm one that comes off the block which was leaking on mine. I replaced that with some silicone hose from a hardware store here.
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The valve is conceled in 2 small hoses. It's not visable per say untill you remove the part connecting to the bottom of the T hose to the hard line.
http://12v.org/urs/PCVStuff3a.jpg
This link.shows the position of the one way valve. If yours looks like this then it's probally there.Last edited by Morris400; 15 April 2015, 13:05.
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