nite fury cam ?s pic of dyno

[ksmrz]

Currently have one in my car. Ran a tune from lethal than got it dyno tuned locally, and it runs like complete ass now but is in storage. Was in the process of fine tuning with emails to shawn at lethal but didnt have the patience or time which is my fault and frankly i wanted to see what it could do. It was degreed. Came out to within .5 of a degree for valve timing events. Its also a comp cams cam and now i see they switched over for whatever reason now.The car dynoed low and frankly these guys shouldnt tune a go cart (dyno shop) not refering to lethal.. was like 453rwhp 414ftlbs on a ls3!! And lost usable power on the street compared to shawns tune. Still have to fill out sig but mods are 17/8 dynatech lts high flow cats slp udp mbrp 3" cb and CAI intake slp 160 tstat and melling 10295 . Car pops on decel, sounds like a demo derby truck. Sputters on accel with a decent load. Comparing shawns and the dyno tunes together with efi live its clear.they pulled a boat load of timing due to knock which is bs cuz the most ive seen in any of my logs is .5 degree with shawns tune. calibrated the maf quick 3-4% here and there and set my base idle and idle decel to a flat 10 degrees. It was done on a mustang dyno. The car didnt do this with shawns tune only thing itd do is have a very faint dead spot if youd rev it quick right off idle. Something is not right but they claim a 416 stroker might hit 500 with there set up. They also refuse to give out numbers on anything they touch. Lets see what your thoughts are also next question is this cam with prc 255s? Anybody run them and if so what size chambers?

[ksmrz]

Dotted is baseline (lethal tune)
Solid is there final tune

91 octane gas through both runs

[camarosspower]

Id say that's pretty low. I know every car is different but my buddy dyno'd 446whp 449 wtq with just an intake tb and headers. Shawn did his tune at lethal

[ksmrz]

Ya idk ready to buy a stock zo6 and leave it alone

[ksmrz]

Not to be mean but almost 450 out of headers and a intake and tune? Even with eps i doubt like hell its worth 35rwhp.

[Tampa Tuning]

I got 456 RWHP on a L99 converted to a LS3 with a 6L80 transmission with the night fury.

[ksmrz]

They did a zl1 with lpe ported blower and there cam running like 15lbs and could only 600 granted it was a auto. I just think with what i have 470-480 should be doable. Like i said im no protuner by any means but compared to shawns tune it runes terrible. It seems like its a stock timing table compared to shawns aswell. Shawn wrote the tune for 91 octane too. Idle airflow is cranked way up from where shawn had it and im guessing because of all the timing they pulled the car needed more air to aide in driveability.It leads me to believe there dynos read low and they have low experiance with the ls3 with a moderate sized came. I want to get that 500 out of it and know itll need heads to come close. Just curious what everyone thoughts are and what heads i may need to do so.

[christianchevell]

sputtering and popping not good a sign you needed a good tune from a database of built up LS engines from a experience tuners library of built up tunes. You should have left good enough alone as you know, the Night fury I have seen as high as about 480 h.p. average on a dyno jet and Mustangs are stingier yours how however has the filter value set at 40...that's like wow what kind of any thing were they adjusting for? Mine was 6 on a average day about 60 and low altitude, not that I know the parameters I do know enough though. I also know no one seems to post the nightfury numbers like they are top secret for duration or lift so I would guess its about .600 lift and about 235 duration for the numbers it usually gives which can be all over the board for a build depending on who tuned , what mods and most of all what LSA as that affects things a lot along with the custom air fuel mapping to stay friggin rich and never run lean, if torque management has been negated, if timing has been messed up without it being monitored on the software watching all through the varied maps of performance.
My tuner specializes in g.m., used g.m. software and h.p. tuning and has a extensive library of past tunes of like motors, and for some it can make all the difference in the world if he can copy and paste a custom fuel map instead of doing it from scratch and then save hours of work tuning a car into minutia ..... From what I know of tuning.... Good luck to you, your numbers are on a stingy dyno that takes into account more real world conditions than a dyno jet as is what I have read they can read lower a lot more if you have ever searched on the differences between dynos. Good luck, you may desire to go back to the tune you had before, as it would be easier on the engine and work on it again from data logging.

And yes 450 on this guys friend from headers and a tune...yah right....the reead out was most likely from a sheet off a dyno that read STD not SAE....quite the difference.

I do not have a night fury my cam is more aggressive its the TSP .639/.625 with 235/239 and 112 LSA not the most street friendly. And about the most a car for daily driving should try from things like PTV clearance and staying above 1500 rpm usually to not surge. Good Luck


ANd there is no data smoothing on my print out..... and your air fuel ratios are far off from mine. And the most I ever get is a very rare exhaust fart from a back fire as I have dual mode and the change in pressure can make it happen with the richness of my mixture, and I do get some decal popping but more of the that's awesome sound... not any thing to worry about. If you read your info your first tune had a much more steady AFR than the second which went from low 11 to 13 high which means your AFR is a mess in my opinion.... and the graph does not show it as its been excessively smoothed.

[ksmrz]

I have efi live. I have both tunes and a ntk wb when i was working with shawn. I will put shawns back i and go from there. As far as filter numbers and stuff i have no idea if thats like smoothing or what. I would not reccomwnd taking your car to that dyno shop.

[ksmrz]

I think the first tune only illustrates the car in pe mode the second showed the afr before pe mode became active. The second is lethals and ran a shit ton better. I wanted it tuned for e10 so it is richer. But in my logs we had 12.3-4 in pe and a 14.3-4 part throttle etc. So i cant see how its off that bad and im stumped

[Lethal Racing]

KSMRZ,

Please let me know if i can help you further and pick up from where you were when working with Shawn.I am now in the office taking care of customer service and we want you to be satisfied with your car.




Thanks,
NICK

[ksmrz]

Sounds good, are prc 255s worth it or should i just send the stockers to AI or tsp for cnc porting and leave compression where its at

[Lethal Racing]

We have great results from porting the stock ls3 heads.

NICK

[62nalide]

Get it tuned by the makers of the cam, remote tuning isn't fun on both parties trust me. It is worth it at the end I have a lot of hours remote tuning and my car is running good. Take your time and I would continue to let lethal tune it