tst and turbos

[Gypsyman]

I'm just going by what I was told and what Piers confirmed. I took my spare box up with the TT Program for Piers to try on his truck and after he got off the phone with Mark he said they were the same and he didn't need to try it. Give this a shot. Call and ask what the boost map is for the original aggressive program. If Mark or Greg say that it starts fueling at 1 lb of boost and and is all in by 12 lbs then it's the same as the TT program that I currently have.



I haven't had any cruise issues with this program but I can see what he's saying. With the TT program at cruise boost you would already be into the additional fueling map. With the new flash starting at 10 lbs you would be at the very bottom of the map and be getting very little additional fueling while at cruise. The new program was good with my B1-04 and the VA but when it came on it still hit hard at about 1700 rpm. The faster your single spools the harder and faster the TST will come on.



I believe that the TT/Aggressive really is too hot for a single. It just comes in too fast. With the TE setting as low as 4 the bottom end egt's can still get on top of the twins before they start to build boost. That's why I'm having Greg cut my TE levels in half. I run a strong bottom side pressure box and that makes matters even worse. The VA is so smooth and smoke free on the bottom side that I prefer to use it for low rpm fueling and let the TST take over the top end duties. Even with the TE cut in half I'll still have far more levels than I'll ever use even with twins.



These are just my opinions and observations so take it all with a grain of salt. There's plenty of people that are comfortable pushing their trucks a lot harder than I do. However, 500hp in the 1100* range is hard to complain about. :-laf



Richard

 

[BRayls]

Well said Richard.



On another note, what HP/TQ level do you guys think I should run the TST on w/ my current mods (in sig). I don't want anther F--- UP !

well Piers said no single can take the power in the upper ranges of the tst. I would call him to find out what he says from the horses mouth.

 

[J.Davy]

Thanks Richard I'll call monday to see what I got. I was just out trying the box without the quad downloader but with the tst boost elbow in and I have never seen my pyro climb that fast. On 6/6 through to 9/9 It buried past 1600 in only a few seconds ,scary.

 

[Gypsyman]

Yeah, the duration and rail pressure drop above 6 really jacks the egt's with the TE turned up. I'm assuming that you have the new program here. Try this, leave the TE on lower levels (0 to 3) and try different power levels. You'll see a substancial drop on the top end temps since the boost can get ahead of the egt's heating up the components.



Richard

 

[BRayls]

Yeah, the duration and rail pressure drop above 6 really jacks the egt's with the TE turned up. I'm assuming that you have the new program here. Try this, leave the TE on lower levels (0 to 3) and try different power levels. You'll see a substancial drop on the top end temps since the boost can get ahead of the egt's heating up the components.



Richard

that is what mark said, after the boom also saying the stock input shaft in the auto should not see above 3 te.

 

[Gypsyman]

Were you guys running the aggressive flash?

 

[BRayls]

that I do not know, only that it was new a few days ago from them.

 

[J.Davy]

Does anyone know when they started selling them with the latest program?I got mine about 1 month after they released the first ones.

 

[Gypsyman]

I believe it was late last year for the '03/'04's. I just noticed that you have an '05 so the programming may be different for your application. BTW, how does the Quad DL compare to the TST?

 

[J.Davy]

The t. s. t. is the same one I had on my 03 but it might act different on my 05. The quad on the 150 setting seems to be the same as t. s. t. on 5 h. p. and 5 on tq. this is based on a hill I go and test on. Stacking seems to be alot quicker than the t. s. t. alone . I am going to do some testing soon. I did a 13. 52@105 today (g-tech pro)with missing second gear (D. T. T. should have valve body for 05's sorted out in the next few days )so It seems to be pretty quick.

 

[JStieger]

Lots of good info on this thread and saves me from doing a search! With my upgraded single turbo (regular HTB2 installed before the TST) I only feel comfortable going up to 5x5 and 100% on the VA and even then I feel it's pushing it sometimes, BUT it's not in terms of high EGT. If I roll into the throttle these box levels seem really smooth for strong, flat power delivery, i. e. , boost and EGT rise quickly at the same time but are not pegged in 1 second. If I mat it, the power comes on so strong it's scary, i. e. , boost gauge moves a lot quicker and ahead of the EGT. At 5x3 and VA=100% I can mat it with lot less low boost smoke and the same observations as rolling into the throttle at 5x5 and 100%. Just need a dyno to verify the butt-o-meter, but these observations appear aligned with what others reported on this thread.

 

[driverno8]

I'm not sure what program I have in mine. I bought mine about a year ago but sent it back to get reprogrammed last Oct. I had a check engine light come on and called TST. They brought up my serial number and said I should send it back to get reprogrammed. Told me it had more adjustablility in it. Not sure what they did, but I was able to feel a difference. The original one came on really, really quick. Not not as much and yes there's more adjustability. Here's my over-all two cents. I can run 9/9 but it gets hot. I couldn't hold it for a 1/4 mile but no problem for an 1/8 mile. I personally think 6/8 is a really good number. Smooth, fast, no more then 1200º, puff a smoke, pins you in your seat, I love it and that's what it's sitting on right now parked in my driveway. I can see where the 8 & 9 levels feel quicker but I think 6/8 is faster over-all. I have also read that stacking an EZ to it creates the most power at levels 5 or 6, not the really high numbers (8 or 9). And that it also cools you down a bit. Any truth to it?

 

[Gypsyman]

The newer flash that you have is a lot smoother due to the changes in the boost map to fueling ratio. Stacking with a pressure box is a good combo and the fact that we find max power on lower levels when adding pressure to the mix is why I think we are seeing the limits of the high pressure fuel system.



When I was testing on the dyno I saw the same thing that you've mentioned. Add pressure and the max power was found 2 levels lower with slightly reduced egt's due to using less duration. With the new program 5x5 and 100% pressure gave the same results as 7x7 alone and the hp line almost overlayed each other. But without the VA's stronger bottom end fueling the torque curve was lagging. With the aggressive program 4x4 and 100% was equal to 5x5 thru 7x7. Power stayed the same or dropped off slightly, smoke output went up and so did the egt's. To me this screams low rail pressure and an inefficient plume in the cylinder.



This could be why Don M is seeing good results with small EDM's. If he is using smaller holes and achieving better atomization then he would be getting more power from a given lb of fuel. If this is true and he is using less fuel for the same power then that would leave more available rail pressure to take the TST to slightly higher levels before the rail was pulled down to low again. This is all an assumtion since he doesn't seem to want to respond to these type of questions yet.



Richard

 

[Goodys1ton]

With my Super "B" I have only seen 36 PSI with the box set up to 6/6. I finally hit 40PSI at 7/7 when I was messing around yesterday. I laid minimal smoke and the power was unreal, plus my EGT's were not all that high in comparison to what I was doing. I feel uncomfortable at that level, I usually drive around with the EZ at level 3 and the TST on 1/1 or 3/3. I ran the box only at 6/6 once in a while on my stock turbo and was very nervous. The Super B seems pretty tough especially for the money it costs. Plus I was taken care of form BD and Kyle at Extreme Deisel when I was having installation problems.

 

[Patriot_RAM]

In talking with TST a few weeks ago, the latest flash was released about three or four weeks ago. I sent my box in for the new flash and to make it a bit more agressive on the low end. The flash is supposed to help with some of the codes. If I remember correctly, I was seeing 336 and 606 occassionally.



I haven't seen any codes since the update. In asking them to make the box more agressive on the low end, I get some smoke as the turbo spools on the higher settings, but it'll get up and run. I have the EZ on 3 and run the TST on 5x5. I was running it on 5x8 before the flash, but it hits the stock turbo way to hard. I'm looking into new turbos now.

 

[AK RAM]

In talking with TST a few weeks ago, the latest flash was released about three or four weeks ago.

3 to 4 weeks ago? I was under the impression that the latest flash was dated September 2004. Will it ever end? So, does anyone with an SO engine run the TST with no codes and no missing?

 

[Saccowboy]

well ive had absolutely no missing and this thing runs awsome but i have only had the nerv to run it up to 7/5. and that seemed a little much. well ive had it on 3 days now and the check engine light has been on ever sense first startup!

 

[strokerschmoker]

My truck sometimes will miss if it is cold out and I am lugging the truck in too big of gear. If it misses 3 times the check engine light comes on. There are codes from time to time never once has affected the awesome performance.

 

[Tomeygun]

3 to 4 weeks ago? I was under the impression that the latest flash was dated September 2004. Will it ever end? So, does anyone with an SO engine run the TST with no codes and no missing?

Yep, ME...



And loving the HP

 

[driverno8]

I have an SO as well. Check engine light only comes on when I use the high idle feature. So I stopped using it. Besides that. She screams.