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6.2L & 6.5L Performance Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines Related to Performance and Longevity

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what else can i do to my stock 6.5 turbo to make it spool louder!!!... JOIN NOW TO REMOVE TRACER

6.5 turbo upgrades

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Old 06-07-2012, 04:15 PM
Diesel Fan
The B.S. Ends When The Turbo Spools


Default 6.5 turbo upgrades

what else can i do to my stock 6.5 turbo to make it spool louder!!!
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Old 06-08-2012, 06:45 AM
DieselSlug's Avatar
Diesel Enthusiast
bombarded w/rust....


They really don't spool that loud due to low boost. There really isn't a way to make it spool louder.

There is a resonator in the intake that you can remove. Adding a 4'' exhaust will allow you to hear it out the tailpipe a lot more. But it wont ever sound like the new diesels.

DieselSlug's Sig:1994 Silverado R/C L/B 2500 VIN. F
219,000 Miles GU6 Full-Floating Rear (3.42 Gears). + Remote Mount PMD, #7 Resistor, HD Fan Clutch, Dmax Fan, Lift pump, Snorkle mod, Chipped, 97 Air Box, Duraterms, ARP headstuds, H/V Oil & Water Pump, Marine Injectors, Rebuilt I/P 3 Years Ago, Fuel Tank, Heath Turbo Master, Rem. Vac. Pump, Optix Boost/Pyro Gauge Rust... What Rust..?
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Old 06-09-2012, 01:26 PM
ebarresi5894's Avatar
Diesel Wrench



5inch stacks a turbo master with a 3" down pipe and a chip. screams

---AutoMerged DoublePost---

Or you can put a really clogged and dirty air filter in and it will sound like a new diesel

ebarresi5894's Sig:97 2500 12V 140k gauges, tuned AFC, #100 fuel plate, 3K GSK, 5" Stacks, BHAF,

97 3500 12V 180k AFC tuned, no fuel plate, adjustable OFV, 1/2" lines, big line kit, 3k GSK, 7" Stacks, K&N intake, Rebuilt tranny billet TC, Shift kit,

Last edited by ebarresi5894; 06-09-2012 at 01:26 PM.. Reason: Automerged Doublepost
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Old 01-21-2013, 10:34 PM
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I have a high psi spring holding my wastegate shut...the turbo controller arm broke in half (idfk how) but I just have a spring hooked onto my intake holding the lever forward, very hobo fix but it builds right around 12 psi of boost and it is louder than any 6.5 with a GM-4 turbo I've ever heard. Comparable to the turbo noise of a 6.0 powerstroke! It turns heads in town

IronBurban's Sig:1995 GMC 2500 Suburban 6.5 turbo diesel. Custom intake, pmd relocated, #9 resistor, feed the beast mod, homemade "turbomaster" 12psi, straight pipe 3"-4.5" tip. (Next mods include 80hp chip, marine injectors, and 4" exhaust with 3" down pipe and 2 1/2" x-over, and hx40 turbo)
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Old 01-22-2013, 08:24 PM
JorgeNY's Avatar
Diesel Fan



Originally Posted by duckslayer31 View Post
what else can i do to my stock 6.5 turbo to make it spool louder!!!
Ditch the POS stock turbo and get yourself a bigger better turbo. You will have more turbo then you can handle.

JorgeNY's Sig:'96 GMC K2500 6.5 Turbo diesel
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