Boost on 1HD-FTE

TD100, What I am describing below is a general outline and has nothing to do with the 100 series but they all work the same.

What you may be refering to by the rocker cover maybe the blow off valve or a over boost valve, both of these devices are there for a reason but do differant things and are differant to waste gates..

The waste gate in nearly all factory turbo and a lot of aftermarket systems are in the turbo assembly themselves (internal waste gate), in race applications they sometimes use a external waste gate.

On your turbo you should have 1 vacuum line going to an actuator on the turbo...this is what controls you boost by opening the waste gate at a set point.

Most people in petrol engined vehicles tap into this line and use either a spring loaded boost controller or a bleeder system.

If you don't know how a turbo works or you have no knowledge of engines I would NOT do it your self, if you do it wrong you can destroy an engine with over boost, boost spiking or running lean and if you are lucky may bring a fault code up.

So for saving yourself maybe $200.00 to $600.00 by getting it done properly it may cost you 20 times more if you do it wrong.

There are many people who have done boost increaser themselves and have never had a problem......but then there are a lot of people who have.

Had on guy who can in with a destroyed engine, he tried to increase the boost him self and followed the information off the net...followed it to a tee, the only thing he forgot was the size of the vacuum tube from the waste gate to the inlet manifold was bigger then the fittings on his boost controller....on of the lines can off when he was hooning and got big overboost and a $10000.00 engine rebuild...he disabled the factory fuel cut so he had no safety device.

Regards Richard

Regards Richard

Hi Paul,
I'm pretty hazy on this, don't really understand it, but I thought the 1HD-FTE was an electronically-controlled diesel and to improve the performance you could change fuel and timing via a chip (eg Dtronic) rather than simply crank up the boost.

Most diesel specialists suggest a chip and exhaust for the 100series and chip/exhaust +/- intercooler for the 78/79series 1HD-FTE.

Have you read the Electronic Diesel Tuning Devices Article on LCOOL?