I had a set of LG Streets and a used Halltech killer bee installed on my 07 LS2 w/47K miles. I had already installed an 08 NPP cat back. Then it was tuned. Other than that it's all stock. The top of the Dyno sheet says Dynojet. The final numbers were 345 hp and 359 torque. I thought that was kind of low but wanted to here some other experiences.

 

That seems very low. My car is an 05 M6 and with headers, no cats, corsa, Vararam, and tune I got 382. Hopefully my ported intake and tb will put me at 400.

 

The average bone stock LS2 is about 340 RWHP. The only thing I see helping you here is the LG Headers and a Pro Dyno Tune. I think you are a little low and should be 370+. A good move at this juncture would be having the Throttle body PORTED and the Manifold Ported to a Stage 2.
That should take you to 385ish on both RW HP/TQ but the big move came with the installation of a PORTED FAST which is getting into some money
but your Car will run much much FASTER at close to 400 RWHP the Car is wicked.

 

I sure thought it was low. Mine is an A6 and I may be wrong but I think the auto pulls more hp to operate. So all things being equal the A6 will deliver less rwhp than the M6. It also makes some difference what dyno was used. Again, not the expert but I think some give lower results than others. What dyno was used to get your results? Good luck with the ported intake.

 

You are correct the AUTO will Dyno lower than the M6. The "DYNOJET" is
the widely accepted Dynonometer on this forum but there is controversy
in whatever you use especially if you would have unusually high numbers.
I was referring to having done all the Mods in my other post and then went on from there. Look at my signature to see. We also have a very seasoned group on the forum so help is easy to be had and there is always
the search function to find something in depth. Good luck

 

My second post was actually referring to GREENTAHOE's post. I looked at your mods, very nice. Thanks for the help, I tried to use the search function but I didn't find much to help my specific set up. I admit that I don't care much for the search function on this forum, it helps a lot but sometimes it's just frustrating.

 

see if you know anyone else that dynoed there with a C6.

My dyno results seemed low when I started modding my car, I changed tuners and went a little more aggressive regarding bolt-tons and the numbers showed up!

 

Do you have issues on the highway being that you have a 410 rear end?

 

There is a new dyno people should seriously consider. That is the Dynapack. I know the Dynojet is today's standard, but the Dynopack is in my opinion has superior consistency and accuracy yet the rwhp is compatible to the Dynojet. None of the Mustang vs. Dynojet nonsense.

It bolts solid to the axles and there is no slippage or straps. Very consistent and controllable.

The Dynopack should be a "must" for high-power engines for 3 reasons.

1. No slipping on the drums, or straps.

2. You can set the start and ending RPM at wide open throttle and the acceleration rate. For example, you can set the starting point for WOT at 3000 and ending point at 6500 rpm. The dyno will not let the RPM exceed that. Then input the acceleration rate to 500 rpm per second. So all you have to do is start the engine, put it in 4th gear, and floor it. The dyno will stabilize at 3000 rpm for 2 seconds (or whatever you want it to be) and then lets it increase at 500 rpm per second (or whatever you set it at) to the RPM cut off. It is rated up to 1300 rwhp, or about the same as the Dynojet.

3. It can also hold the RPM at any speed which enables a tuner to get fueling/spark optimized at that point.

Reckart Performance Tuning in Cedar Park opened up about 7 months ago has the new Dynapack. This shop's focus in on the dyno tuning. Many guys go there with difficult to tune and FI cars. Its the only one I am aware of in Central Texas. I know of many Corvette Forum members that had their cars dyno'd here with good results.

Here are some pictures:

The big red modules house hydraulic pumps. The hoses are are for cooling water and data back to the PC. Note the modules are on rollers. They are not bolted to the floor.


Bolts to the hubs eliminating tire slip, straps, etc.


Display. It prints out torque and HP for multiple runs.

 

That is a bit low. My A6 did 367 in 3rd with k&n and catless longtubes.

Did you get before numbers?

 

Mine was on a Dynojet as well, but I had Jeremy Formatto do my tune. He also did all the tuning on my previous Tahoe. A 408 with 80mm turbo, AFR heads and cam, meth, converter, etc. He spends a good 3+ hours between the street and the dyno. Did you get a copy of your sheet? There are alot of factors that can sway the numbers on a dyno. How does it feel?

 

The Dyno is only a tool for the tuner and for bragging rights. How did she do at the track?
Are you happy with the performance of the car? That's all that matters.
Jeff

 

No before dyno, the tuner was on limited time so they did the header and intake install and then the tune. BTW, the tune was donated to a car show which I won from a donation to Toys for Tots. So, they did it for free. That's the reason I didn't put their name in here. I didn't want anyone to think I had a problem with the tuner. He did say that a typical LS2 dyno's at 315 so I gained about 30 hp. Maybe he was referring to their dyno.

 

Gaining about 30rwhp is about right for an LS2 with those mods, so if that dyno DOES generally show 315 for a stock LS2 then you should be right where you want to be.

Like was said though, run it at the track and see what kind of MPH you get.

You should be around 118mph with those mods in the 1/4 (at a decent density altitude). If you are, then your car is making the power it should be making

 

I, too, did about 370 with longtubes and an intake on my 2007 A6. This was on a Dynojet at Speed Inc.

 

Yes, I did get a copy of the sheet. I can post up if you want to see it. He did some tuning on the tranny and it helped a BUNCH! SOTP wise, I don't know really. It definitely felt better but it's hard to distinguish between the better shifting, better sound and the fact that I had work done.




I just had the work done Friday and picked it up Saturday so haven't had a chance to take it to the track. I did have it at the track a few months ago and only ran a 13.59 so maybe mine is just a dog (or I am a really bad driver). I am very happy with my car (whoops, I mean our car) and will be just as long as I don't get behind the wheel of one the 500 hp cars on here.

 

I agree, he originally told me he expected about 40-50 rwhp with the mods mentioned and a first time tune. Which I thought was a bit optimistic. If I did in fact gain 30 hp I am happy with that. I'm just a little bummed with the 345 dyno in general. But, I know enough not to rely on that alone and was why I wanted to here a few other opinions.

 

I had a wounded stock tune after headers, vararam, no cats, and corsas......I put down 341WHP but again the tune was wounded. I cam'd her and put down 423WHP....I think you need to have the tune checked by someone else just to be on the safe side. Mine was lean as hell too!

 

The only issue I have on the Highway with the 4.10 Gears is all positive.
1. The Car feels like it picked up another 40 RW
2. The 4.10 will help put driving manners on a radical Cam and help tame the effects of overlap.
3. Great for driving at Low speeds in heavy traffic. Just let the Clutch out
4. On the turnpike you can cruise at 68 MPH and still only be at only 1700 RPM..
5. No loss in gas millage because of less engine load.

 

Those seem like mustang dyno numbers. I'm pretty sure even an A6 with those mods dynos 370-380 on a dynojet. I made 392whp with a vararam, LG Super Pro headers, and dynotune, but I'm an M6.