i have a tst comp which is supposed to fuel up to 4k rpm but im assuming that some kind of ecm change has to be done or something? what all do i need to do to be able to rev that high?

 

I would say it has more to do with heavy duty springs first and maybe a cam second. The stock springs aren't strong enough over 3500 and you might get piston/valve contact.

 

Electronicly a smarty would do it. I've taken mine to 3750 once, but Bob W says 4000 is possible. Actually that TST comp is supposed to fuel to 4500, but I've never ran mine w/o the smarty to see how it behaves by itself. Valve springs would be a something to look at if you want to rev high, plus a cam and a fluidamper certainly wouldn't hurt.

 

BTW why do you want 4000? Planning on pulling?

 

Without a smarty, or the old school MAD ecm, or a flash, it just doesnt really happen. The ECM has a rev limiter, plain and simple. The TST cranked up high, as well as a comp can get the engine RPMS moving upward so fast that you will overshoot and rev past the limit, but its not the real thing. You'll notice the truck fall flat on its face without an ECM flash that eliminates the rev limiter and also the RATE limiter. The Smarty and before it, the MAD makes the truck feel so overwhelmingly faster because of the elimination of the RATE limiter.

I cant comment on the Blue Chip REDLINE box. Not sure how its supposed to allow 4,000 RPM without an ECM ... anybody want to chime in?????

Valve springs become an issue at the higher RPMs as Beeram has mentioned. And valve to piston contact is not a good thing. But that isnt coming into play at 3,000 on a 24 valver, with its small, light valves. 4,000 might be on the edge depending on how fatigued your springs are. But its not the valve springs that make the truck a dog after 3,000 rpm, its the ECM.

Kp

 

Can the Smarty also eliminate the RATE limiter?

 

the redline box basically takes totall control over the ecm. thats how it revs to 4000 rpms. its basically a new computer system, hince the price i would think
as far as the TST comp goes, i have it stacke with my DRAG comp in EZ mode and right off the bat from 1 to 2 shift, hits 3650 everytime, then shifts at 3500 every shift after that. i do believe if i have a smarty in the equation, i would be able to get alittle more out of it. i am to cursious about this rev limiter. does the smarty take care of both of them? i had the tripple stack on it before, back when i thought i had a TST comp . i might have to buy another smarty and do the ole triple stack again.

 

Smarty ELIMINATES the rpm limit..... it's up to you to supply the fuel to make the extra rpm's usable...

 

i have the smarty and still have the rev limiter. i think its the other way around, smarty supplys the fuel to 4k not the rpm JMO.

 

Gosh, all you need is a 0 plate, HD valve springs, and a 4k

Eric

Sorry, couldnt resist.

 

with my tst pm3 comp and smarty ive hit 4k accidently a coupla times. she can get a way from ya awful quick on a 3rd gear launch

 

There is a difference between being able to rev to 4K and make power to 4K. The 24v motors design doesn't allow for HP to be held to 4K in stock form. We were able to continue increasing HP to above 3850 running a redline box with a cam swap..... All trucks with a stock cam we have dynoed run out of steam rapidly above 3400 regardless of the box used.

Doug

 

Fairly certain you are incorrect... from the madselectronics FAQ
my own empirical evidence supports this... and to add to what Jetpilot has said, my truck pulls strong to around 3500 but then feels like I'm out of fuel(running Smarty and DD3's only)...

 

Thats good info!

 

all i m saying, i cant rev to 4k! i drive around in 2nd or 3rd and i hit a rev limiter and its no where near 4k, its like 3500 or something.
but i will try again, to see for sure.