EGT Temps

[Bidja]

Doesn't matter. Along a flat or up a hill towing. The boost will max out at the same point. Id usually road tune it on a hill though. As it would spool up faster on a hill too with some load. Spool rates can also trick the ECU thinking its over boosting, when its actually not.

Well, with stock ECU, I could run around flat with needle closed (max spool) have max boost 18 psi no worries, even go 20psi (with max spool set), but then start hauling especially with tow up hill and would get limp. Found I had to back the boost off to 16.5 psi as the ECU could not keep the fuel up to it (get limp). Always set my max boost (CRD) with either Tillix/Dawes with max spool and then adjust needle to set spool rate that suits.

So, do agree best to set max boost on a hill climb.

[surfman]

Thanks for all the replies. No I don't have a boost gauge. When the Dawes valve was installed they said it was set to 16psi. So should I give it a couple of clicks and see how I go? Will I notice the difference between 16psi and say 18-20psi in the driving?

[Bidja]

18-20 psi boost will improve driveability and EGTs will be lower, if no limp occurs. Give Berrima diesel (02) 4877 1256 a call and see if there DP Chip works with higher boost on CRD.

It is a good idea to know what boost you are running, good option is to possibly by an Ultragauge (EM Plus) that will provide useful performance measurement data (eg: boost, kW/N-m, ECT, eng load, fuel rail pressure etc). Can buy them direct from manufacturer in the US for $149AUD posted. Also will identify fault codes, be able to clear them eg: if U get limp or other faults and is a good for diagnostic tool. For CRD, plugs into your OBD11 port. Check it out or similar first before playing.

http://ultra-gauge.com/ultragauge/ultragauge_wired.htm

[surfman]

Thanks for the replies. Has anyone seen/used one of these and if so, any good?

https://www.ebay.com.au/itm/Autohil-...b738:rk:4:pf:0