Couple questions about boost and injectors.

[jfrye]

I have a 99 quad cab dually, with 5 speed tranny and 3.55 gears. It is basically all stock except for the AirDog II 150. I have Fuel PSI, Boost, and EGT gauges. I currently only see 16 PSI max boost. Is this normal for a stock truck? I have tried searching on the forums, and all I really saw is max numbers of what the turbos and engine can produce and handle. So, can I raise my boost numbers closer to 25 without a boost fooler? Its really not a big deal to me, seeing as how the truck seems to run great, but just curious. Basically, just curious about what I would need to achieve 25 PSI.I was also considering getting some RV275's. Will I notice any gains adding these right now, or do I need a programmer to notice the gains? At this time, I wouldnt be able to afford both, so I would rather not get injectors I cant use until I get the programmer. If a programmer is needed to notice the difference, what would be the best programmer to get? This truck gets drove an average of 10-12 times a month, usually pulling a 7x12 trailer. With the flatbed on it, and such an air gap to the front of the trailer, it sucks the MPGs down.One more questions is about Mike's MPG Fooler. I am not all that great with the wiring, but it looks like you have to tap the IAT and ECT sensors? Is the High Idle Mod required for the MPG Fooler? (<- may be dumb questions, but I dont really understand these) I obviously wont be doing any of the wiring for these, but just some questions for when I have a buddy do the wiring.Thanks in advance for the help,Justin

[98whitelightnin]

Sounds like you have a boost leak, it should build 22psi before the waste gate opens. You can build a boost tester out of a 4" plumbers boot and 4" pipe cap.[ATTACH]5094[/ATTACH]You can do injectors but until you get the leaks fixed they won't be beneficial.

[paul99]

i thought max stock boost was 20 lbs for that year ,size turbo

[mehbohdi]

You do not need to have a aftermarket box to put in RV275's and you will notice the difference. I would do Cold air intake and exhaust B-4 tuner, you will get the most benefit from tuner. Stock boost more or less 20 psi, so you might have a leak or a weak waste gate. Rule of thumb 10 hp = 1 PSI of boost. I wouldn't push to much over 35 psi with stock head bolts. Just my 2cents.

[jfrye]

Thanks for the info guys. Is there a write up for the boost leak tester? How to make it, and where to put it to test?

[98whitelightnin]

Go to lowes and get the rubber coupler in 4", 2 hose clamps and a PVC cap of your choice. Drill and tap for a air fitting and pull off the air filter hose and put it on the turbo. Turn your regulator on the air tank to 15 psi and hook it up.

[jfrye]

Sounds Simple enough. I will try this within the next few days, and post my findings.

[pepe]

Sounds like you have a boost leak, it should build 22psi before the waste gate opens. You can build a boost tester out of a 4" plumbers boot and 4" pipe cap. [ATTACH]5094[/ATTACH] You can do injectors but until you get the leaks fixed they won't be beneficial.

Great information for future reference on building a boost tester, got all the 4" plumbing parts down in the basement.