After installing my guages last weekend, I noticed I had lower boost #s than others were reporting. While unloaded the highest I could get was 14psi. I pulled a trailer this weekend while not that heavy 6000 lbs,I figured it would give me a chance to see what the CTD would do. I still could not get any higher boost #s even pulling hills. My EGTs would get up to 1100 if I kept my foot in it. Going down the road at 65 they were running about 650. I figure that is Ok but the low boost does bother me. I have the stock plate slid forward, power seems good but have nothing but stock to compare it to. I get great fuel mileage and hardly no smoke. I have a stock filter that is out the door this week to be replaced with a BHAF. I can suck the filter minder on the stock about 7% since the plate slide, before it would not move. <br>I did the guage install at the same time I slid the plate so I have nothing to compare #s with. Next time I will get a stock baseline first, but didn't think about it this time.

 

Check your intercooler boots for tightness. Especially the one right off of the turbo. The AC line rubs it and if not caught on some trucks, can eat all the way thru. You might also want to check and see what psi your wastegate is opening at.

 

Check your wastegate diaphragm...it might be leaking. My '97 leaks, so I have disconnected it and plugged the line. I might try one of those TurboMaster all mechanical wastegate actuators advertised on this site.

 

I installed the BHAF today and checked the boots, I see no noticable holes or anything, and all are tight. I assume to test the wastegate diaphram, you use a vacum pump? Is there a way to put pressure on the whole system and check for leaks with soapy water or something?

 

you can take the wastegate signal line off and hook it up to an air compressor. Regulate the pressure at the most to 30psi... turun the psi up slowly and watch the wastegate as you apply pressure.

 

To check the intercooler boots you have to rig up a test connection to the turbo inlet. You can make a test connection with a 4&quot; rubber sewer cap (Home Depot or Lowe's stocks them) With the turbo inlet capped, you can pressurize the system to about 20 psi and listen for leaks. It works real slick if you install a small pressure regulator and compressor connection right on the sewer cap. It is a little surprising how tight you have to get the boot clamps to keep them from leaking.

 

I will check the waste gate the first chance I get, that sounds simple enough. Then if it checks out ok I'll check the whole system. I may just check it out anyway just to be sure it isn't leaking. <br>Thanks guys, you are a big help! I'll post my findings as soon as I get some time to check it out.

 

i have the waste gate off mine that is set at 25 psi. if you are intrested. hows 25 bucks plus shipping. mike

 

I finally got around to checking the wastegate. I hooked it up to my air compresser and slowly turned the air on to it by the regulator. The wastegat opened at about 26 lbs on the regulated guage on the compresser. I take it that it is working correctly? <br>I've also checked all the clamps and they are tight, and I can't find any holes. I guess the next thing is to put pressure on the system to check the rest of it. Maybe this weekend.