[flipm3]

I am seeing people posting their own dyno graphs more and more literally as the days go by. Personally, I am taking a greater interest in reading, interpreting, and understanding dynos for pure automotive awareness. I believe there is much to learn from dyno graphs and more so about them. I had a lot of misunderstandings on how to analyze these graphs, but with the help of many you, I have cleared a lot of that up.

If you're interested, please share your dyno graphs and maybe we can continue to build on this thread. I believe this thread has the potential to give people an idea of expected gains from certain modifications. I believe it will be a good resource to educate ones self about dyno graphs. All the while, it would hopefully become a solid reliable archive.

I find myself constantly searching the forums and trying to remember where I saw certain posts. Well this may be a good place to consolidate a lot of records.

Hopefully we can do this in a very controlled and systematic way. May I suggest we make our posts in the following fashion:

• Vehicle (Year, Make, Model)
• Modifications
• Type of Dyno
• Gear Used
• Description of Graph

Then you can post an image of your dyno graph. Preferably a graph of each of the following:

• Power & Torque vs. Engine Speed with AFR (SAE)
• Power & Torque vs. Engine Speed with AFR (STD)
• Power & Torque vs. Engine Speed with AFR (UNCORRECTED)
• Power & Torque vs. Speed with AFR
• Power & Torque vs. Engine Speed with AFR and Conditions

Feel free to add any notes regarding your post (technical difficulties, errors in dyno, future plans, etc).

[flipm3]

• 2002 BMW E46 M3
• Supersprint V2 Stepped Headers, CPI Euro200, Evolve Automotive evolve-R Tune
• DynoJet 224LC at ASpec Tuning, Schaumburg, IL
• 4th Gear
• Before and After Tune

SAE


UNCORRECTED


CONDITIONS


NOTES: The wideband sensor/AFR pickup was incredibly inconsistent. This made it somewhat difficult to tune it the way I originally intended, as I wanted to get an Alpha-N Tune done. We opted to stick with their Stage 1 Tune for now. Sal@Evolve said that he would feel more comfortable doing it if my AFRs were properly read. He found out that the AFRs measured were not accurate through manipulations in the tune, but no real recorded differences on the dyno graph. I plan on going to a more reliable dyno location in August to get a proper Alpha-N Tune done.

Another note, a few days after the dyno, I found out I had a failed pre-cat O2 sensor in bank 2 and a faulty EGT. I'm also not sure if this effects power, but proceeding replacing the pre-cat O2 sensor, the car did feel much stronger.

[sraz786]

-Custom Bimmerworld/Epic tune vs Standard ESS Euro Tune/ 93 Fuel
- 2003 E46 M3
- Euro Headers, Euro Cats, Dinan Intake, Dinan Muffler, VS Motorsport Pulleys, 3.91 Gears
- SuperFlow Dyno
- 4th Gear

[flipm3]

Thanks for posting!! I don't know much regarding the WinDyn dynos, but do they do any type of correction factor? SAE? STD? etc.

Great numbers too!!

[///Marini]

Originally Posted by flipm3

NOTES: The wideband sensor/AFR pickup was incredibly inconsistent. This made it somewhat difficult to tune it the way I originally intended, as I wanted to get an Alpha-N Tune done. We opted to stick with their Stage 2 Tune for now. Sal@Evolve said that he would feel more comfortable doing it if my AFRs were properly read. He found out that the AFRs measured were not accurate through manipulations in the tune, but no real recorded differences on the dyno graph. I plan on going to a more reliable dyno location in August to get a proper Alpha-N Tune done.

I'm confused.. on their site it only lists stage 1 and the alpha-N. What is stage 2 and what is the price/performance difference between stage 1 and 2?

[flipm3]

Originally Posted by ///Marini

I'm confused.. on their site it only lists stage 1 and the alpha-N. What is stage 2 and what is the price/performance difference between stage 1 and 2?

sorry for the confusion. i will edit that right now. from my observation, Evolve has changed the naming and marketing of their tunes. if i remember correctly, Evolve used to call their tune for a completely stock car 'Stage 1', then a car with mods such as stepped headers, exhaust, etc was 'Stage 2'.

i'll edit that right now, but you are correct, there is just a Stage 1 and Alpha-N. thank you for the clarification!

[flipm3]

let's see more dynos in here

[PerkM3]

Here's mine, sorry for the delay.

Vehicle (Year, Make, Model) - 2005 BMW M3
Modifications - Fan clutch delete, TMS pullies, aFe stage II intake, SS V2 stepped headers, BW 3.5" race exhaust, BW/EPIC standard tune (93 octane)
Type of Dyno - Dynojet
Gear Used - 4th

SAE Correction Factor - 1.02
Smoothing Factor - 4

Little side note, found out that I had 3 plugs fouled when I was on the dyno. I'm not sure what/if any affect it had but I will dyno again in a few weeks just to see.

[Ramp1]

^ Sick numbers!! Out of curiosity, did the fan clutch delete yield any noticeable gains? Are you running cats at all?

[PerkM3]

Originally Posted by Ramp1

^ Sick numbers!! Out of curiosity, did the fan clutch delete yield any noticeable gains? Are you running cats at all?

It's really hard to tell as I didn't dyno between mods. I just had a baseline of 279 whp and then this dyno. All the power mods were done within a week of each other.

I did the fan clutch delete more for cooling then power, but from what I've read the fan clutch delete is good for 5-8 whp due to it removing drive from the motor. Kind of like underdrive pullies.

Edit: No cats or resonators.