Something's wrong with my truck, or i wasn't ready for the dyno. I was standing beside MadMatt from TDS when it made the first run, disappointed he asked me a few things that he recommends, truck in OD (i wasn't, but rather 1:1 third gear), and the engine wasnt fully warmed up. I was running it a few hours before but when i started it up, the gauge had just reached the normal position but was not fully up to 210* operating temp. I could have pulled the hill out on the road and lugged it to 1300* and then came in and did the dyno, who knows it would have been better, or worse.

I Think i have a fuel delivery problem, i am debating on putting the new wheels and tires off a little, and doing an aeromotive pump, and 5/8" pickup tube. When i dyno next month i want to see what my fuel pressure is during a run. (underhood gauge)

Matt noticed the sump that Tenn had and even with his relatively stock fuel system it still out did me with much less mods. Plus, i admit my truck doesn't feel as strong as his did that little test drive. And that brings me to the boost, i was only seeing 20-21 psi on the dyno, and max i saw that day on the road was 22-23. I had an exhaust donut leak but i don't think i fixed it wholly because the turbo was not seated fully on the pedestal because of the collector misaligned when i retightened the donut holding collar bolts. I probably, hopefully have an exhaust leak. My pipes were in rough shape where the donuts rot away at the steel. Contemplating DI Uppipes or ceramic coated BWD pipes and sending the 1.15 out for coating as well.

Mike beating me on the dyno has set in on a massive PMS infliction with $$ i dont have.

 

I hear ya, $$$, if we had a bunch of money we would have the sickest PSDs around Im hesitant to order Tunes because i want to get my rearend tightened up with traction bars. I know how i am and if i have 80 or 120 tunes of fuel runnin i will break somethin Its cool you got to atleast put in on the dyno to see where your at. When you bought the new turbo, is the 1.15 exhaust or the turbine side? With your exhaust and intake i think she breathes well, once you get the fuel dialed in you be where you want.
Did you get a better tranny cooler from BTS,with your new tranny?

 

my turbine housing is 1.15, and the ATS housing is a 1.15 housing as far as i know, so they are both equal.

I had them install a 6.0 cooler as well while they had the hood up.

 

Kris, do you have anything that should make for more power besides the chip from DP? It seems like 307 is pretty standard for having just a chip. 311 is only 4 more than what you did. You must have some mod I'm unaware of, or I don't get why you think you should've made more. Enlighten me.

 

This DP tuner chip is a hell of a lot stronger than my old TS chip. Last year at fall brawl with a *slipping* stock transmission/sonnax, i made 309/602 on 37" tires. They said tires don't make that much of a difference but come on, i have a built tranny now, with better tuning. I guess it is just a sore feeling spending $4600 trying to put the power to the ground and then getting a lower HP number with less rolling resistance. Maybe i'll leave it the same until Spring Fling and see if it was just a faulty dyno reading.

 

Different dyno's on different days. I dislike dyno run comparisons for this very reason. Heck, even the same dyno on different days can give different readings.

 

With the trouble they on the the dyno on Sat. This is very possible.

 

Like Jeremy said, different dynos, different days, plenty to make for variations. Plus, what you said above is most important, not a dyno number. If it drives and feels stronger, that's great.

 

Kris,

Numbers aren't everything, unless it's the ones marked ET/Speed. Dyno number competition is kinda "iffy".

Quarter mile times are a much better indicator of what the entire drive train is doing, and that's what counts, the overall.

Compare your old times (if there are any) to your new times. That'll tell you what you paid for. And that doesn't even mention the vastly increased reliability. That alone is worth a bunch!

Pop

 

Well, this has been fun, but I think it is time for me to say something here because I've had enough fun with the whole sink strainer sump thing and all. My dyno run and Kris' were a little different. Him in 3rd and me in OD IIRC. Don't know why that happened but I told dude to make as much as it could and I didn't care if he broke it. Kris' truck is definitely equipped to smoke mine, for some reason there was a problem.

Since the glass is half full right now, I think it is a good thing because now he can look into it and get whatever is ailing fixed. If not for my run he might not have realized without the comparison and chalked it up to a dyno fluke which it may well be. I have no doubt he will find the problem and fix it. I also don't think it is 100% fuel delivery to the injectors but if he cannot find a glaring something else, I would definitely try a few tests there. Anyway, I'm sure he's on top of it checking things out.

Kris, I wouldn't wait until Spring Fling to look into things as I'm sure you're not. That performance at the drag strip gives me some pause everytime I think about it. Those were decent times but you know what I mean. Is it better now? Tried the new tunes on a deserted stretch yet?

BTW, I didn't run down the strip because I still had my old tunes, and I didn't really want to because we have a 1/8th track here, and I don't have a bulletproof BTS, and I didn't feel like paying for it. I will be going out to the strip here sometime for a baseline despite the wife calling that "Stupid". There are a lot of ricers that go here.

 

I ran it it on 120 race, on a deserted country road in third gear, from 2000 rpm to 3000ish rpm. I kept a steady eye on the boost gauge, and it came up to 20psi fast but never moved past that. I'm not sure what it could be, i am thinking maybe an intercooler leak if it is not exhaust leak or a boost leak. With my mods i know i should be making more than 25psi of boost or close to it. If i could budge 24 or 25 i wouldn't worry about it, but i am about ready to pull the trigger on BWD ceramic coated up pipes and collector. My up pipes were pretty worn away where the donut seats on them, and im sure i didn't install the donuts correctly when i reinstalled the turbo. I clamped the turbine inlet on first and then had to pull the turbo down at the front of the pedestal to seat it on the pedestal, and im thinking i broke the seal there. $325 doesnt sound bad for what im getting...

Another reason im thinking exhaust pressure leak, aside from the fact that i have less boost than i should, is that i had alot more smoke on the dyno than Tenn, even if you exclude the fuel mods and turbo mods i have done. To be honest the truck doesn't feel like it has the kick in the pants acceleration like it did way before i lifted it.

 

Yeah, I remember your comments about my boost levels on that test drive. You may be onto it. Certainly not headed in the wrong direction. Is there any signs of soot anywhere? After all that driving and dyno you should be seeing something.

 

Last dyno event I went to, nobody was able to make as much boost as when on the road. The rollers have to be REALLY heavy.

And let me emphasize the importance of having a good foundation for making good power.
With all those boost leaks, it's no surprise to me that your numbers are low.
And at the risk of sounding like a broken record, Kris you have the facilities and the ability to be able to put your fuel pump inside the tank, or sump it like Tenn did.
When you get a few minutes, try removing your fuel pump and checking the screen inside the inlet and see if you don't see a bunch of crud in there.

 

Kwik, i am seriously thinking about doing a 5/8" pickup, a sump, or a pump in the tank. But, what im curious about, is 3/8" large enough line to feed all you can throw at stock injectors? I already have 3/8 on the pressure side of the fuel from the tank to the engine, and then splits to much larger lines where the DI kit hooks into. First i want to see what my fuel pressure is under a load to determine if this is even a fuel delivery problem. Thanks for the tip Dan, i will check the pump one day.

 

i Don't know how much of a problem i have anymore...?

Tonight on the way home on a straight stretch of road, i set it to 7, 140 agressive, and i held it to the floor until i had the drive in the center of the road and i held a steady 23psi. Then a few miles down the road there is this straight section with alot of up and downs that is fun to hit in dad's Beemer, well i started from a stop on 120 race, lit the tire(s) through first, second gear, and chirped 3rd i think, and i held 24psi. I know 24psi sounds right, and thats about all i would want to make. Reconsidering on not buying those ceramic coated up pipes and collector. I just guess my large 1.15 housing is just laggy...

Any thoughts?