Hi fellas,<br><br>I currently have a pdrhx-40 and still seem to high egts. I can peg the gauge fast if I don't let off. I guess my question is do you think that a bigger turbo is in order? Seems to have a lot of smoke at top end still. I don't do much towing if any at all and will be heading to Wyoming to take a job offer soon. Will I run into altitude problems with the current setup? What about a pdr hx-50? Too much lag? What about a 18cm housing? Sorry for all of the questions, just looking for advice.<br>I have not dynoed the truck but here is some of what I have:<br>0 plate, ATS exhaust manifold, 4k gsk, timing at 19*, 191 dv, 4 in exhaust and an AFE.<br><br>TIA<br><br>Cory

 

With the #0 plate and 4k kit you still gonna smoke at top end. It would probaly be better if you ran the HX-50. An 18cm housing would work but to get a little more power just go with the HX-50. Although you will have some lag but thats just gonna happen anyway. Also what you could do is run 4&quot; down pipe and 5&quot; from down pipe straight back that would lower you EGT's. If that helps any sorry if it doesnt.<br>SD03

 

Based on my experience, a zero plate and HX40 should be set up to run at 21.5 degrees timing to get the EGT to managable levels by controlling the burn better. Even at that, a hard pull or rapid accelleration will put you right against 1,450 degrees F in a few minutes, so you have to really watch it to keep it down around 1,250 degrees.<br><br>Extended running at 1,350 degrees pre turbo with synthetic oil seems to be OK, but I have coked my oil and plugged piston coolers by running dyno oil at those temps.<br><br>I run a 18 cm 40 stuffing a modified 60, and can exceed 100 lb manifold pressure, and still run the temperatures right up there in the danger zone in a real hurry if I let it rip. So, I really do not think a turbo alone can solve the temp problem.

 

How much lag is there in the hx-50 compared to the hx-40? What about other differences?<br>What other suggestions can you offer for attempting to alleviate my dilemma? <br><br>Thanks<br><br>Cory