Had my Z28 dyno tuned the other day, kinda disappointed with the results...any ideas from the graph what might be up? It idles pretty good, runs smooth. And though I'm disappointed with the numbers, it ******* haulsss *** up top, so I'm content

PRC Stage 1 LS6 Heads, 62cc's, 10.8:1 comp.
Torquer v2 232/234 .595 .598 112 LSA
LS6 Intake
Ported TB
PRC Duals/Tit Ret/7.35" PR's
Six Speed, stock clutch, stock rearend
160 T-Stat
Pacesetter Longtubes, Dumped after O/R Y
TR55's, MSD wires
MTI Lid, Stock MAF
42# injectors (he said they were a pain to tune?)
Racetronix pump/Hot wire

 

Why did the pull get stopped so early? 6200 for that setup is not enough.

 

looks like it was still slowly climbing

 

I don't know why he stopped that low, because he upped the limiter to 6500 like I asked. I think he was scared of breaking my car . But really I don't know why he did that.

 

I think it's got some more RPM in it... but do keep in mind that all dynos read differently. If it hauls ***, be happy.

 

I wish mine had that much power. Mine is stock except for chip and it hauls ***, so I would love to have 400+ horsepower and 383 torque!

 

Yea I definitely am happy with how it runs, not gonna get bent out of shape over twenty horses lol. Quick ?, what does SAE Smoothing: 5 mean? (top right corner of sheet)

 

Yeah, I could possible see another <15hp & 15tq> out of that combo, especially since its a stock drivetrain thru an M6. Really good numbers nonetheless and all dynos are diffrent. Just curious, did you upgrade the oil pump,timing chain, lifters while in there? Fresh oil? Have you changed the rear fluid and tranny fluid at all?

 

Yeah, I'd pull to at least 6500 rpm. Put a FAST intake on that thing and you should be easily over 420. Not bad results IMO.

 

Ported oil pump, LS2 Timing chain, and LS7 lifters last year along with cam. Heads and intake are what I just did in the past few weeks. Fresh oil, fresh tranny fluid, didn't have time for the rearend but I will change that soon. I figure I'll do the free mods and maybe an UD pulley. Don't foresee the FAST in my future...but I'll likely go stroked six liter after I do my rearend and tranny/clutch

 

Looks pretty good actually, with basic bolt ons + the the cam. I'd definitely spin it higher though, I have the same setup minus the heads and LT's - we spin that one to 6900rpm (LQ9 block).

 

he might be afraid of your 98 rod bolts

 

Just a dyno buddy! If it runs good go with it! Dont chase a number ! You will never win! A fast intake will give ya 42ish with ease had this same setup !

 

if you gained 42rwhp from a fast intake I think you had some issues before the swap

that is not what I would call typical at all and no one should ever expect more than a 15rwhp gain over a ls6...a lot of people get more but it shouldn't be expected unless you like disappointment

 

I think he was saying a FAST intake would put me into the 420's lol.

 

It's a 6spd - what's up with the huge dip in torque there. Also, that thing is not even making 300hp until over 4000rpm, and your AFR doesn't look very steady there. Looks like there is more in the car with a better tune, and maybe a different cam would work out better for you.

 

Yea I've seen that dip before with the Torquer cam...not sure what it is. I might drive it this year then get one custom spec'd and install it next winter. We shall see

 

haha that makes a lot more sense!

 

42slb injectors are not hard to tune and scale. Second Id atleast pull it to 6800 to see where it peaks to know where to shift at. IMHO Id find a tuner that knew what they were doing.

 

This.