Question for PDR HX40 Guys....

[DEZLPWR]

I have a '99 ETC 5 spd w/ DDIII's, Comp Box and a new, freshly broken in PDR HX40 w/ 16cm housing.

I did a test run tonight with Comp on 5-5 and pedal mashed to the floor. Max boost was 36-37 psi and EGT's would not budge past 1200*. Does my boost seem low? I thought it was as my PDR HX35 w/12cm housing would see 44 psi and VERY toasty egts...

 

[shaft]

Not a lot of experience with the HX40 yet but I can tell you what piers told me... ..... which was not to let boost go over 42 lbs period if I like my HX40... ... Now I didnt take him to mean it would disintegrate but that prolonged use above that boost level would not do it any good... ... . so it sounds like you are where you need to be... ... .

 

[MUDDY]

mine is 36-37 on 1x5 w 2s

 

[DEZLPWR]

Originally posted by muddymess

mine is 36-37 on 1x5 w 2s

hmmm... .

Is that towing or empty? Also, what about 5x5, or do you not ever put it on 5-5?

 

[MUDDY]

steve,



i decided to NOT pierce the wire on my eth.



this figure of 36-37 is not towing, about 8500 gvw, up slight incline. have hit 38 towing a few times. 36 is an everyday occurance

 

[jwilliams3]

DZLPWR,

Your boost of mid to high 30's is fine for what your set up is, and is not on the low side.



The most I can usually hit is about 36psi with my PDRHX40/16, you can see my mods on the sig.



--Justin

 

[banshee]

My gauge will spin really fast until about 38-39 psi, then it will slowly creep around to 40-41psi. You can probably get a couple of more psi by adjusting the wastegate a little, but if your EGTs are fine then I'd leave it as is. The lower pressures will only help the turbo.



John

 

[JR2]

Those numbers look about right to me... on 4x5 I see 36-38 psi and egt in the 1200 range. If I go to 5x5 I can get 40-41 psi and 1500 degrees because I have the drag version of the comp.



JR2

 

[KatDiesel]

You went from a 12cm² housing to a 16cm² housing and your wastegate is most likely set to be fully open before 40psi. Besides, 38 psi from the HX40 is alot cooler air then 44psi from an HX35. Its a combination of those things that playing a part in the lower boost.

 

[DEZLPWR]

Thanks guys... . I feel better now!