TST Comp with Edge Comp stack

D

dennhop

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Joined
Nov 10, 2008
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203
So I just got my TST Comp today, and I stacked it with my Edge Comp, just to see what happens. I've tried it with the Edge on and off. here's my results so far with everything, only one days worth of testing though.

Edge Comp (Not the Hot Unlock)
have seen 50 psi boost, no more than about 1100 pyro, at WOT, RPMs above 3000.

TST Comp by itself
lvl 6, 35-40 psi boost, 1200 degrees pyro (hit 1200 almost instantly)
doesn't smoke nearly as much as the Edge Comp did though. Low end response seems a little laggy...

TST Comp stacked with Edge Comp
TST on lvls 3-6, Edge Comp on 5x5 (guessing the equivalent of lvl 3, as an EZ)
35-40 psi, 1300 degrees pyro, almost instantly, seems to be better response on the low end, smokes a lot thicker. Didn't want to push to much more past 1200 degrees, to see if I could hit 50 again, temps scare me a bit.

I need to figure out which settings to use the Edge on, if I'm going to leave it stacked. I looked around tonight for about 4 hours, trying to figure out the settings on a Comp that are the equivalent to the EZ, but no luck. If anyone knows, I'd appreciate it.
When I'd called Edge a while back, they told me that the Comp runs 3 degrees of timing, but I don't know if that's the same for the the Edge as an EZ.

I did notice that my timing shudder was there, when I had the Edge turned on, but not nearly as bad as it was when I was running the Edge comp by itself. Also, with the TST on by itself, the shudder was gone. It pulled hard and smooth the whole way. Fuel only box seems to have taken care of the timing, but I think I still need some timing to help the low end. I'm going to play around with the stack, and see if I can find the happy medium because I think I was overfueling my turbo with the Edge maxed out and the TST Comp on 6.

Anyone else's input that has ran this stack would be greatly appreciated. Thanks!
 
1200* scares you????.............you might need a new hobby!

don't box boxes hook into the data link? if so and you are using the other for wire tap, then it is basicly useless unless it knows when to hold the solenoid open longer
 
Mudn_1 said:
1200* scares you????.............you might need a new hobby!

don't box boxes hook into the data link? if so and you are using the other for wire tap, then it is basicly useless unless it knows when to hold the solenoid open longer
Click to expand...

Lol...I guess I need to get used to it...I've just never seen more than 1000 on the truck before! The edge comp uses the map, datalink, and the wiretap, as an edge comp. To make it the edge ez, all you do is disconnect the wiretap. The tst comp only uses the map and the wiretap, so I plugged the tst into the map, the edge into the tst, and the factory harness into the edge. I did find out this morning that the fuse had gotten disconnected, so that was the cause of the horrible peformance on the drive home. Once I got the fuse back in, I found out what the tst comp is capable of! I still think that even as hard as it fuels on it's own, that the edge does make a big difference down on the low end, whether it's because of the timing or the edges 0 boost fueling... I think now that I got it working properly, I'm really going to like this stack!
 
The edge makes a difference throughout the RPM range because it adds timing, and that makes your EGT climb somewhat slower. That being said, I can peg my 1500* pyro with both boxes on, and it also creates 60 psi or better drive pressure with the HX35. Going to try a B1 today and see how I like it.
 
If you want to continue running the TST/Edge stack I would recommend just selling the Comp and getting an EZ. I know you already have a Comp and you can untap it and run it as an EZ, but you can also sell the Comp for about 300 and get an EZ for about 150. So you would actually make a little money and have the same stack.

As for the performance, I used to have the TST PM3/EZ with a set of 150s and a 62/71/14 and I loved the power. Made 471 to the wheels and was fun to drive on the street. Never saw egts above 1450* and that was WOT on a long uphill grade.
 
Try moving your edge map connection to the sensor and your tst to the harness side.
 
figured out that the fuse was blown on the TST, so I got it hooked back up, and it runs like a raped ape...BUT!!!!
So, today, playing around with the TST/Edge stack, I ended up blowing up 5th gear...:doh:I'm going to have to figure out when I'll have time to take it apart and either fix it, or get it fixed, but I got into it, and then as soon as the turbo lit, BANG! :banghead: and 5th gear wasn't doing anything. I can shift into all the other gears, and they work, but when I shift into 5th, it's like sitting in neutral...any ideas?:confused013:

As far as rebuild goes, is there any upgrades out there that would help with the tranny? Just had it rebuilt last summer, and whatever the factory stuff in there that was fiber, was replaced with brass....sorry, not a great explanation, but I'm not real familiar with trannys...
 
Sounds like you stripped the teeth off the inside of fifth gear if I had to guess. You can get an updated fully splined mainshaft, an updated fifth gear nut, bigger or hardened input shaft, and a cast iron rear housing is all the updates that I can think of. That should be more than adequate though.
 
When I had the tranny rebuilt, the guy who did it replaced the mainshaft with the full splined one, so am I looking at replacing the mainshaft again, or just the nut? not sure how it all really works...
 
dennhop said:
When I had the tranny rebuilt, the guy who did it replaced the mainshaft with the full splined one, so am I looking at replacing the mainshaft again, or just the nut? not sure how it all really works...
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Probably fifth gear itself if I had to guess. I'd say the splines on the inside of the gear stripped. You may be able to salvage the shaft. Then again, you may not. Here's a pic from a guy on our local forum.
 

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I got referred to Nick, over at NDK Diesel Performance, and he said that he'd take a look at it and he could get it fixed for me. Said that if it's just 5th gear, and everything else is good, he could do it for 300 bucks, so I'm going to take it over to him tomorrow.
Once I get the truck back and running, I'll let you know about the Edge, I want to run with it a bit more and test it out, to make sure I like the stack.
 
I'm keeping my comp because the way I have everything hooked up I have the option of running it as a comp or an EZ from the cab. That and its stuck on 5X5, dont know anyone who would want to buy it like that.
 
out of curiosity what is the issue with running two boxes off the wiretap at the same time? is it a matter of current drain ofc the wire or the vp not being able to handle that much fuel? im not going to do it just because i cant afford a new vp but would it be possible on an aftermarket vp like a monster vp?
 
ewatts2003 said:
If you want to continue running the TST/Edge stack I would recommend just selling the Comp and getting an EZ. I know you already have a Comp and you can untap it and run it as an EZ, but you can also sell the Comp for about 300 and get an EZ for about 150. So you would actually make a little money and have the same stack.

As for the performance, I used to have the TST PM3/EZ with a set of 150s and a 62/71/14 and I loved the power. Made 471 to the wheels and was fun to drive on the street. Never saw egts above 1450* and that was WOT on a long uphill grade.
Click to expand...

Thats a lot of boxes to make 471 I did 488 edge juice with attitude and 110hp ddp injectors. seems like something wasn't working correct. and I also was running the 62/71/14.
 
Two boxes are a lot? 17 hp at the wheel is not that much of a difference considering all the variables that are not mentioned.
 
smaller injectors one box and makes more power. Seems like a waste of money to me. Going down the track my egts never went over 1300. Put my truck in the high 12's that way.
 
Horsepower rating an injector is a joke anyway. Your one box combines responsibilities of fueling and timing whereas his two do basically the same thing, only independently. Still too many variables to consider. Sounds like decent running trucks either way.
 
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