Factory 100 Series TD

Pete,

Thanks for the reply. Is that a stock standard boost pressure? Are you running a boost guage?

Thanks in advance.

Dak

Stock standard as from Toyota January 2006 model. Fitted pressure gauge to existing manifold pressure connection with gauge in cab.

Pete.

Thanks for that. Am looking into fitting a 3" straight through mandrel bent exhaust system to a 1HDFTE. From what I've read the boost on the standard turbos isn't adjustable and to warrant such an exhaust system, you want to be running a minimal of 12 psi boost. Should do the trick. Thanks.

whoever told you that is not informed...a 3 inch will give you more down low as the turbo will spool earlier, due to a greater pressure difference post to pre turbine, therefore better economy, less heat retension...DO IT...and if you are not 100% happy, you can up it to 14 with a boost compensator (www.ebay.com.au) which is the absolute maximum, and then intercool..

Dozer, thanks for the info. You'll have to educate me here. I take it you mean a 'boost controller' which adjusts the amount of pressure going to the wastegate, hence allowing you to adjust the boost pressure? I thought a 'boost compensator' or 'aneroid' adjusts the air/fuel ratio according to boost pressure? I was going to look into an engine management unit (Unichip perhaps) which can be custom set on the dyno to manage the fuel delivery side of things. Any feedback or ideas?

you are correct, i bought a controller from there and adjusted it up from 11 to 14 real easy...intercooler kits have spacers for gate actuators that preload the spring inside more and up the boost that way, but then the gate valve does not open as far and at revs the boost can creep up further, which is not a good idea.
Andrew
ps unichip is only for electronic controlled diesel or petrol. If you have one of those babies, then get a sarari one, as some of the cheaper ones dont do your motor any favours... You will still need to play with boost and intercoolers thou...12 is a good max for non intercooler, 14 will end up 12 at the motor after the intercooling...thats the main reason to do it..

Thanks mate. It's a EFI jobby with intercooler. Will go with a custom programable chip that works in conjunction with the standard computer and takes into account throttle position, RPM's etc as opposed to the dodgy ones which just add more fuel, regardless of what else is happening inside the engine. Will fit a pyro and boost guage to keep an eye on what's going on. Can't wait!