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Discussion Starter · #1 ·
I had a post about my Smarty TST competetion stack a while back and have news about it now....

According to TST tech department it is commonly reported that using this box with the upgrade it is common to experience the truck bucking and sputtering on higher levels such as 8 or 9. Also the TST power max competeion on level 5 is equlavent to the TST power max 3 on level 9.

Given that, i was told that the VP is running out of fuel and i guess "dry firing". I have enough fuel to the VP but they say that the fuel in the vp is running out. the fact that i have larger injectors DOES NOT help the fact either. I was told it was designed to be ran with stock injectors so the pump would be able to keep up with the demand. On top of that i'm also using a smarty.

My question is what do yall think. I think its bs that it was designed for STOCK injectors. I really think that my injectors are to be blamed for the sputtering on ANY level greater than 3!!! I hate having that much power on the fly and cant touch even HALF of it. I'm going to try out my friends Dragon flow 250's and see if that helps out some. Anyone running the Edge Drag smarty? I know of one friend who is and it works out great. Its either that or Go with a monster vp. I'm thinkin monster but that wont be for a while. Give me some thoughts.
 

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Well after talk in with JBarker, i have the same problem at high rpms.

I was drivin down the highway and floored it from 60 to 100 and it started "buckin" that was the edge on #6 and the smarty on #2(fuel and boost)!!!
My fuel pressure was 13+, so i know i had fuel to the pump, its just the injectors were runnin the other side of the VP dry....the VP couldnt keep up with the demands of the cylinders. I turned the edge down to either 4 or 5 and it didnt do it, so....must be runnin out of fuel....:w:
 

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Discussion Starter · #3 ·
Yea, But I've had weak injector bodies that killed my throttle once. I swapped the nozzels to a diff one and it ran soo nice. I think i'm gonna think about the Monster. My friend Wezel (guy with dragon flows and smarty edge drag) bought one a few weeks ago from Coaltrain....Threw it in #6 piston poped. NOT BECAUSE OF THE PUMP. His fuel lines were unmarked, and no clamps on them, one got misplaced and it scorched the wall and warped the piston head really bad. A few of us went down to pick up his truck the next day and one said that even with just the FIVE cyllinder...that truck had more power than anything hes driven. I see you were just talkin to Jbarker...he sells them as well as Coaltrain. Im really thinking about going down that road.
 

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huh. i was thinkin of doin the same thing. i just bought some stuff from coaltrain, and when i buy my tst, i hope my new stock vp doesnt blow up or something. do yall think it would ruin the new injection pump with a tst/smarty stack?
 

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Discussion Starter · #5 ·
I just threw my new vp in at the beginning of January. its holding up fine. If its running after 20 mins its good to go. And make sure to use a BD stealth cover, or one from tst or bluechip. If not, then get a "posi tap". Napa sells them. Look them up on google. If your pump dies(which it probably wont) it will be under warranty AS LONG AS THEY CANT TELL THE WIRE'S BEEN TAPED!!!! I used the Posi tap and peeled down the insulation as far as i could holding the wires togather so i should have no problem with a warranty.
 

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Discussion Starter · #6 ·
Anyone els???? With the Smarty taken out of the truck completly just the TST will still buck and kick on medium levels. TST told me they could take the competetion upgrade off the box but theres NO way thats going to happen. Is it possible for the VP to shoot a blank and inject nothing but air?
 

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What throttle setting is it bucking at?

It is very common as the boost level peaks and begins to hold steady or decline that it cuts off fueling if boost drops at all.

This is just a symptom with this box and is made much worse with big injectors or a slow spooling charger.

There is nothing wrong with the TST. It is functioning the way it was designed and is heavily influenced by boost reference.

Dave
 

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Discussion Starter · #9 ·
not near as smooth as an Edge Comp or Juice with Attitude. TST boxes have always been known to be more aggressive
Thanks Gus. Like Dave said though, Its not doing it while boost is falling, If i'm in lockup and put my foot into it it spools slowly and goes smooth, but then when the charger spools is when it starts to give the "hammers of hell". It does the hammering on level 3-9. I dont think i've been past 5 but twice since i've had it due to this hammering. TST being more agressive, I could trade it straight across for an edge drag. But then the smarty timing has to go. How would that turn out?
 

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Mine doesn't shutter until I let off the throttle on the higher levels. Everyone I know with a TST COMP doesn't have their's shutter until they come off of the throttle. I ran 11 hole super dragon flows with a tst comp/smarty stack and even with the tst on 9 the truck wouldn't shudder until I let off the throttle. I'm willing to bet it's your VP getting weak or maybe your MAP sensor going bad since the tst does it's fueling solely off of boost.
 

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I agree with Gus. I lost 15hp going from 7 to 9. I usually run my smarty on 5 but I had friends that ran them on 7 and 9 and don't have a problem with shuddering while on the throttle. Just when they come off.
 

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Discussion Starter · #14 ·
I tried the Smarty on 2,3,5,7,9. Even no smarty the TST surged. I did all this the day before the dyno. Thats why i ran the Smarty on 9. It wasnt until i got rolling is when i decided that i'd run the TST as well. I think that one of my injectors is dirty or not closing all the way. It is a real bad misfire. I havnt Had the TST buck on me when letting off the throttle. I wish is was that way and not the other way around. I'll try out my friends 250hp 10 hole injectors tonite or tomorrow. Thanks for all the info yall. Its not that impressive but heres my dyno run. smarty 9 tst 4. 427hp 790tq. I now run the Smarty 7 tst 3 for driving but i'll drop it down to 5 and see how the tst goes from there.

YouTube - CTD Dyno Days

Drag the pointer to about 3/4 of the way over so you dont have to wait for the whole thing to load. I'm at 8:15 and its just one pass out of 3.
 

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Discussion Starter · #15 ·
I'm willing to bet it's your VP getting weak or maybe your MAP sensor going bad since the tst does it's fueling solely off of boost
It just hit me, when i ran a superchip comp box stack i always got a MAP sens code. The harness of the edge was bad and i sold both the tuner and box for smarty and tst. If the MAP was bad perhaps i'd get a code? I can change it anyways just because thats a good point you made and the VP i just put on in January 08.
 

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My VP was weak out of the box. 9 months later I put a year old one on that had dead pedaled and picked up 45hp. Mine ran absolutely perfect. Felt great, smoked, smooth as can be, fired up instantly everytime no matter whether it was hot or cold. Who woulda thought a 9 month old VP would be weak.
 

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Discussion Starter · #17 ·
I'm pointing the finger at the VP. I have loaded my smarty and TST comp in a friends truck who runs the same sticks as I, and he also has the Edge EZ, all it made his truck do is haul balls. I tried his REGULAR tst pm3 and i had the SAME misfire on level 3 and up. i tried running my smarty on even #'s and all i got was a new horrible sound that made me pull off the interstate and change the settings in the shoulder. It has to be the VP. TST said every bolt on you have added to their Pm3's the lower the setting you have to run on the tst. My friends truck just proved that wrong.
 
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