My Dyno Day

[lyonsfam1]

Well i went down with a bunch of local racers to the dyno shop and we did a group dyno session. This wasn't a tuning session just a fun day for $40 for 3 runs and pizza and drinks. It just so happened there was a S/C S-10 there with a powerdyne unit and a big mouth.

So here ya go: Wynjammer, 238.7 RWHP and 290.8 RWTQ!

he put down: Powerdyne, 204 RWHP and somewhere around 250 RWTQ

now dont get me wrong I was very nice to the guy but he kept talking about how "the powerdyne is gonna eat you for lunch!" and i just told him to get on the dyno and prove it.

here is a link to a video one guy made of the day my truck is the black standard cab with the loud exhaust my screen name is lyonsfam1 so thats how he identifies everyone on the video. the end is rather funny check it out.
http://www.idahostreetracing.net/phpBB2/viewtopic.php?t=6379

[XxInFaxX]

impressive numbers and good price. havent been able to watch the video yet, but i will!

[biglouie_underpressure]

good run! what was the a/f by the way?

[94s10]

good numbers, what other mods does your truck have?

[lyonsfam1]

like i said it was just a fun day of dyno so the a/f wasnt being read.

my mods are:
Wynjammer (Wynjammer@6PSI) @ 6 lbs,Flex-a-lite 210 fans,CFM throttle blade,TR6 NGK plugs @ 35,All igniton upgraded with Accel (rotor ,coil, wires, cap), and a custom exhaust rebuilt from the headers back with a high flow cat and a vortex muffler.

by the way i drag race alot and my best time is a 14.90 @ 93mph @ 2750 feet above sea level. not too bad and i still cant hook up :D

[lamerboy]

how many (actual) psi of boost was the boost gauge showing? Curious about the a/f ratio too.

[JROD©™®]

very cool...seems a bit higher then D-Caf...lets see... :-P

[lyonsfam1]

at 5200 right before i let off my boost gauge was showing just a hair over 6 lbs

[Sparky2263]

That is soooo cool watching someone runnin' their gator get a big dose of STFU!

Good numbers all around lyonsfam, can't wait to watch the video!

[JROD©™®]

dcaf has the jammer on his 4.3L 4x4 blazer...

MAX RWHP = 217.2
MAX Torque = 253.2

pretty good numbers of course he has different mods...this seems to be a pretty good s/c, great testimonial for anyone who is considering s/cing...

[lamerboy]

at 5200 right before i let off my boost gauge was showing just a hair over 6 lbs

Nice numbers. So what mods do you have?

[<-~Jo~->]

nice video !

[Supercharged-ZQ8]

Wynjammer @ 6 lbs,Flex-a-lite 210 fans,CFM throttle blade,TR6 NGK plugs @ 35,All igniton upgraded with Accel (rotor ,coil, wires, cap), and a custom exhaust rebuilt from the headers back with a high flow cat and a vortex muffler.
238 rwhp/290 rwtq. Very nice. Were any correction factors used? If so, what were they? Were all the vehicles running on the same dyno calibration?

Not to be a skeptic, but it seems a bit high for those mods. . . But, without a hard point of reference it's hard to speculate. Great run, nonetheless!

D-Caf had 217 rwhp with Wynjammer 6psi S/C, DynoMax Cat-Back Kit, MSD S/C Wires, MSD 6A, EGR mod, CFM-Tech Throttle Blade, 180 T-Stat.

Between the two, I'm seeing a difference of an e-fan, headers and a better flowing cat and muffler. Not certain that those could account for 20 hp, but it IS possible. No denying, though -- VERY substantial run. The proof is in the pudding -- definitely speaks well for the power gain!

[lamerboy]

Between the two, I'm seeing a difference of an e-fan, headers and a better flowing cat and muffler. Not certain that those could account for 20 hp, but it IS possible. No denying, though -- VERY substantial run. The proof is in the pudding -- definitely speaks well for the power gain!

I think thats a fair assumption give or take a few hp. Have to wonder about the correction factor and theres also going to be that % of difference between dynos as well.

Good #'s none the less.

[94s10]

dont forget d-caf is a heavy 4x4 blazer versus a reg cab truck (i think it was a reg cab) if that would make any difference

[Supercharged-ZQ8]

dont forget d-caf is a heavy 4x4 blazer versus a reg cab truck (i think it was a reg cab) if that would make any difference
Weight wouldn't matter on a dyno. At the track, yes -- but on the dyno all cars weigh the same (for all intents and purposes).

[D-Caf]

There is also the fact that my dyno run ended at 4800 rpm, and looks like it could have kept climbing (I may have hit the speed limiter). So I could see this being quite possible. I believe mine could easily break 220-225 rwhp if I had all the setting right on the programmer (speed limiter, shiftpoints, and timing).

So he's got less drag on the engine with the e-fan, much better flowing exhaust, and though the weight doesn't matter, going through the transfer case of my 4x4 does suck out some of the power.

I could believe it based on those facts. Just means I need to work more on mine ;)

Congrats on the numbers!

[Maxx]

Now to just break through the 250rwhp obstacle....

[Supercharged-ZQ8]

Good points, D-Caf. Ending at 4800 vs. 5200 rpm will make a difference -- possibly up to 1/2 to 1 psi (about 5-10 hp).

Don't get any of us wrong -- we're not denigrating your dyno run. You put down some very good numbers. My point was merely trying to figure out where the extra hp was coming from on lyonsfam1's dyno. The only things i could immediately see were the mods I pointed out. And now that you mention the rpm difference, I can easily see where the additional hp on his run came from. 400 less rpm, headers, freer-flowing exhaust (cat and muffler), e-fan -- those would all do it. And yes, the transfer case would probably eat up a couple ponies as well. With all that taken into consideration, I think we may have found the extra 20 hp. Headers are good for around 5-10, muffler and cat together probably another 5-10 (maybe -- possibly only 5-7), e-fan for 5 or so, transfer case loss maybe 5-10 hp, and then the extra 400 rpm possibly 5-10. Yeah, I can say that 238 is probably a good solid bet.

Yeah -- I also think you could have hit the 220-225 rwhp mark if you ran it up to 5200. Still, 217 isn't anything to sneeze at! You gained 5 or so hp (can't judge very accurately from the scan of the dyno) between 4600 and 4800 rpm -- so even allowing for less of a gain at upper rpms, 225 rwhp isn't a far stretch.

To say the absolute least, we've gotten two solid dyno runs with Wynjammers. Now I'm getting twitchy to get mine done, just for S&Gs. . . I think I've got a few additional mods that may up the figure. . . Maybe. Too many projects, too little time! Of course, $80 for a dyno session isn't something my wife likes to see either. . . Go figure, she'll let me blow $1000s of dollars on truck parts, but argues about $80 for a dyno run. . . Gotta love her!

[Supercharged-ZQ8]

Now to just break through the 250rwhp obstacle....
Going by everything I've seen (debates, formulas, etc), the stock injectors should be able to handle up to 250 (give or take). I wouldn't want to push them too much further, though. It's very possible.

My own goal is to hit at least 250 rwhp -- 275 if I can manage it. 300 is possible, but not without some serious fuel system re-working (aka: manifold and injectors). 238 isn't that far off! It's the extra 12 hp that will be the ***** to overcome!

[D-Caf]

No denigrating taken, I was just trying to help point out where his numbers vs mine could come from. I know my dyno run wasn't the best for showing the full potential for these S/C units, but it gave me a good look at what I gained.

And I'm damn happy with my results, but seeing these results makes me want more (don't it always....)

[lyonsfam1]

i think i mislead you guys i have stock headers but everything behind them is redone custom.

and as far as i know there were no correction factors done but it was my first dyno so I'm not 100% sure.

[nomaboy]

nice numbers. mine must be close to that too because our 1/4 times and speeds are really close.

[Supercharged-ZQ8]

i think i mislead you guys i have stock headers but everything behind them is redone custom.

and as far as i know there were no correction factors done but it was my first dyno so I'm not 100% sure.
Hmm. . . Stock exhaust manifolds. . . Well, that convolutes matters a bit as far as crunching numbers. No matter. A "third party" made the video, and it's on the site you linked us to -- so that speaks that it's legit. I'm REALLY curious about mine now. . .

[LilYellowZQ8]

A few of us here have been waiting a few years to find out what kind of numbers you are pushing. Come on Tristan, WE NEED THIS!!!!!!

[Maximus]

A few of us here have been waiting a few years to find out what kind of numbers you are pushing. Come on Tristan, WE NEED THIS!!!!!!Yeah man come one we need our horsepower fix!!!!

[LilYellowZQ8]

starting.........to........get.........the........ shakes..........need.........fix........now!!!!!!! !!

[Supercharged-ZQ8]

I had it dynoed a LONG time ago. . . 2002, I think. . . Done more mods since then. . . Need. . . to. . . get. . . time. . .

[Sparky2263]

Hey Tristan, here's how you get time;

a) You call the dyno shop

b) You schedule a time

c) You stick it on your calender

d) You gleefully show up, eagerly anticipating the results!

;)

[LilYellowZQ8]

Hey Tristan, here's how you get time;

a) You call the dyno shop

b) You schedule a time

c) You stick it on your calender

d) You gleefully show up, eagerly anticipating the results!

;)
Better yet, we will set it up for you, but you will have to pay for it.:D