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Engine | Fuel & Air Components for 1.8T

SportTuned Fuel Rail

Autotech's new billet aluminum fuel rail for Mk4 1.8T models represents yet another first in VW tuning. The SportTuned Fuel Rail is the first one-piece VW rail to integrate the pressure regulator. It is a purpose-built 1.8T rail, machined from billet 6061-T6 aluminum, not made from a universal extrusion like others on the market. There's no other parts to buy in order to make it work in your VW - no remote regulator, no regulator mount, no hose.

A standard, factory pressure regulator fits directly into our rail and clips in using the factory clip and o-rings.

The integrated regulator makes for a clean installation without extra fuel lines to run.

If you choose to run an aftermarket remote pressure regulator, that's clean and simple, too. Just add our optional clip-in regulator plug and then plumb the remote regulator at the front of the rail.

The SportTuned Fuel Rail is available in your choice of two finishes: fully polished or bright red anodized. Each comes with black anodized hose fittings and ARP® stainless mounting bolts. Our logo is laser engraved. Made in USA.

Description	Part Number	Price	Order Online
SportTuned Fuel Rail, Mk4 1.8T, polished	10.133.180K	$239.95	Add to Basket
SportTuned Fuel Rail, Mk4 1.8T, red anodized	10.133.181K	249.95	Add to Basket
Optional Clip-in Plug for remote regulator	10.133.188K	Avail Soon	Add to Basket

SamcoSport Blow Off / Diverter Valve for VW/Audi 1.8T & 2.7TT

As the name suggests, a Blow Off, or Diverter Valve, is a mechanical valve that dumps boost pressure that is trapped between the throttle body and compressor wheel of the turbocharger. This pressure is created when the throttle is shut off momentarily between gear changes and deceleration. Designed and developed in the early '80's by German engineers to reduce lag on early turbocharged rally cars, this simple but very effective method has evolved into much more than just a plastic disposable diaphragm valve.

The plastic type diaphragm diverter valves that are installed on many European performance models are prone to diaphragm failure with relatively low mileage. SamcoSport have now introduced a Blow Off Valve that are designed in the U.K. and manufactured on state of the art CNC machines. Only premium quality Aerospace 6061-T6 aluminum is used to ensure optimum performance from every valve. A range of fixed rate stainless steel springs are supplied to allow for custom boost and idling setups.

The unique twin SamcoSport U-Tec Seals that are fitted inside very piston valve are manufactured from oil and heat resistant viton. The SamcoSport U-Tec Seal design gives a flexible seal to piston contact area, so this means a perfect seal even in extreme operating conditions. Commerical o-rings are NOT used. O-rings do not provide an adequate and acceptable sealing solution for high-performance applications.

All internal springs and external pieces are manufactured from 316 grade stainless steel to prevent corrosion. Direct fit Installation kits for 1.8T and 2.7TT VW & Audi applications include stainless steel clamps and silicone hose rated up to 5 bar.

SamcoSport Blow Off / Diverter Valves are available in Black, Blue or Silver and all valves are engraved with the SamcoSport logo to enhance style and prevent imitation.

Bypass/Diverter Valve

The bypass/diverter valve for 1.8T motors is intended to recirculate pressurized intake air when the throttle body is closed to prevent the turbo compressor from stalling.  The latest "710N" valve, as it is commonly known, helps reduce surging that may occur when modifying your 1.8T's engine.  The 710N valve has a 14.4 lb. spring internally rather than an 8.8 lb. spring found in the earlier Golf, Jetta & New Beetle 1.8T motors as well as in all B5 Passat & Audi A4 1.8T applications.

This is the latest version made by Bosch and is used on 2002> transverse 1.8T models.  If you own a pre-2002 Golf, Jetta, Beetle 1.8T or any model year B5 Passat or Audi A4 1.8T, consider upgrading to this factory installed remedy.

Description	Part Number	Price	Order Online
Bypass/Diverter Valve	06A.145.710N	$39.95	Add to Basket

4.0 Bar Fuel Pressure Regulator

OEM Bosch fuel pressure regulator provides extra fuel to motors with turbocharger modifications.

Description	Part Number	Price	Order Online
4.0 Bar Fuel Pressure Regulator	0.280.160.575	$89.95	Add to Basket

N75 “J” Valve for 1.8T

The wastegate regulator for 1.8T motors is commonly referred to as the N75 valve. Autotech offers a direct replacement, factory upgrade for the stock 1.8T N75 valve. Known internally as the “J” valve, it literally transforms “chipped” cars by smoothing out the annoying surging that many aftermarket chips are known for. Borrowed from the 225 hp Audi TT, we have seen a 2 psi boost increase on a bone stock 1.8T simply by upgrading to this valve! Simple to install.