I suppose it is possible and it is the direction most have indicated here. I only ck'd the pressure when we put the pump on and it was 18, as I recall at idle. It is the 150 so it shouldn't be falling off very much if at all. Since installing my twins, which are suppose to be wastegated at 60psi I haven't had a good source for measuring my boost as my TST doesn't rocket that high on the gauge. I have an 80psi gauge going on it and a 40psi fuel gauge on one of those dual column pods along with the next group of mods. That's going to be done in about 3 weeks so then I'll know what the FASS is doing under heavy load.

 

The adjustable timing feature is sold as an upgrade. It is designed to work with the R49 remote. I prodded them to do this and it turns out it was already being discussed. It is meant for those stacking other products that advance timing like the BDDL. Trouble is, hardly anyone knows what exactly the DL is doing. Although, most agree that it works very well.

This just allows another means of dialing it in. I believe the upgrade cost is about $50.00. You can contact Danny @TST and he can provide more details.


OT-OF-Here,

As I am sure you will agree, the electronic controls on this truck(motor) are sophisticated and can make things difficult at times. I think at some point, we all need a DRB to see what the he!! is really going on. I know I would like one. Just more money.

Chris

 

We are definitely thinking along the same lines. I have a performance friendly dealer who is going to ck my truck out with the DRB this next week. I guess you can make an actual run with that thing plugged in,...right? It may give me all I need to know.

I think it is past time that I need to be sure that all who have followed this thread understand that I am not blaming TST for anyting here. I am doing some pretty radical things to my truck and I am taking every precaution I know or hear about to keep the truck's integrity whole throughout this entire process of modding in the most informed manner as possible.

 

Does anyone think that installing a pop-off valve in the twins cold pipe or the intercooler piping would eliminate this problem? If so, where would you put the pop-off specifically? Tks.

 

The Piers Twins set I saw installed had twin blow/pop off valves as part of the kit. These were on the cold air turbo side, I assume one for each turbo. That truck also had the BD BOV installed on the intake side to protect against turbo bark. I did not see the kit before installed, so not sure how they were plumbed. Both blow off valves were piped to the front behind the head light area. Maybe they would be willing to discuss the subject with you.

I can't really see how it would help with your issue though. They would seem to only drain off excessive boost, that doesn't really sound like your issue. But I am no expert on the subject at all.

 

I'd say that it is running your fuel rail dry.....I get the same situation.....so I have just stacked my ramifier instead, and I don't seem to get popping of running the rail dry............Modded CP3's IMHO are necessary to run the TST stacked.

Bill

 

Mark Chappel told me that excess air in the intercooler goes backward into the turbo causing the pop because I have such a tight shifting transmission. I'm thinking then a pop-off valve may fix the problem. I'm not sure however if it should be in the cold pipeing of the twins or in the intercooler pipe and where would it need to be placed for maximum effectiveness.

 

I would agree with you except I ran that exact same stack with the TST/CLDL with the stock turbo setup and NO popping. I'm running probably 1/3 or more boost now so I think Mark is probably right in his assesment. Also I can run the TST/EZ and NO popping and that is with both of them turned way up. I'm sure your right about the CP3 however and my 80psi boost and my 40psi fuel gauges will be installed today so that will help tell me what's happening here.

 

i have this problem with bd on 130 ans tst twins on 5/3,however if i just barely turn on the mp-8 it goes away.have you tried the cldl tst and say the ez on lv1

 

I have the same problem when I have the quad box on 100, and the VA3.2 on 130. I lose power, and have the popping. Right now, I just have it turned down. I will begin to diagnose and resolve this issue as money becomes available.

 

Yep,..tried it. As long as the TST and CLDL are in the same mix it does it, but it didn't do it with the stock turbo so to me if it was a fuel problem (running out of fuel) then it should have been a problem before,...it wasn't. This all started after putting on the twins and to me the difference is 20psi additional on boost. I had been hitting 38 to 40psi with the stocker and now I'm at 60psi. I think Mark Chappel is right and the boost is causing the situation. I wish someone would get on here that really knew the turbo side well enough to advise if this idea of a pop-off placed just in the right place would handle the problem of air backing up from the intercooler into the turbo and causing this pop.

 

Nope....there is alot more fuel leaving the rail at 60 psi than 35-40psi (that is how the turbo got to that boost!). If it is a crisp pop...like popcorn then it is a dry rail.

 

You should get a rail pressure gauge so you can see what is going on. SPA makes one and SP Diesel has a power module with one built in for about the price of the SPA gauge or less.

I've got a TST stacked with a SP Stage IIe and you can see the rail pressure drain quick when the TST and SP are cranked up. Anything below around 12,000 psi when I am getting on it and my truck will start popping.

 

that popping sound that mine makes in the upper rpms with the tst at 4/4 and the bddl at 90hp sounds like pop corn popping ! Exactly like that.

 

Yep,..got that and then a much louder single backfire-like at max rpm. Guess I have multiple things going on here. Tks.