How do i get more whistle??? Out of a 38r does the 1.00 or 1.15 make a difference in that?

 

The exhaust housings do not change the "whistle" of the turbo, the 1.15 does deepen the tone of the 38r but you don't get more whistle.

 

how do you get that louder whistle then?

 

stacks seem to make turbo whistle louder. Or just get a 6.0

 

6.0s sound great im looking for that sound without changing the truck ha. I know on some of the earlier dodges have turbo silencing rings??/ such thing on fords..??

 

not sure on the 7.3

 

There is nothing you can do... I think if you look around on ebay you can find one of those "turbo screamers" that you stick in the exhaust... might be what your looking for.

Remove the Cat if you have one, muffler if you have one and thats all you can do.

 

going with a stock 7.3, there is a way to make it slightly louder but it will not be like a banks wheel, which is what you need to make it LOUD, or garrett has them to. Take off the pipe going from the turbo compressor wheel that goes to the intercooler. this pipe contains compressed air from turbo before being cooled by the intercooler. from the factory, ford intalled some quieting insulation on this tube. it looks like aluminum foil wrapped around the whole pipe. take a razor and slice the length of the pipe, maybe on each side or make three or four longitudal cuts through the foil to speed things up. remove sound deadening foil and white fuzzy insulation from pipe. do this away from the open intercooler and turbo as this white stuff floats around everywhere. clean with water and scotch brite pad all the glue residue, or use laquer thinner and steel wool. dry pipe and check inside of pipe blow out wiyh compressed air. reinstall pipe. there will be a noticable high pitch sound louder than before. the only reason ford put this on was to quiet the turbo wheel when it spooled. i have in and out intercooler temp gauges, and my in temp went down about 20 degrres after removing insulation. also down under alternator, zip tie any wires away from contact with this tube or they will wear through eventually. nothibg should be ib contact with this pipe ie wires, other hoses, etc.

 

If you lost 20* of air temp by removing that insulation, you fixed a boost leak at best. By removing it you should not gain, nor loose any air temps...

 

Gauges dont lie and the insulation kept the heat inside the tube. Aluminum sheds alot of heat, but if it is wrapped in insulation it cant. This is what happened to me after I took mine off, so it is safe to say that it would do the same on any other 7.3. Strangely, the out temp was only about 5 degrees cooler, not 20 like the in temp changed.