REVIEW.DYNO | Evolve Automotive X-Pipe

[flipm3]

Thanks for chiming in Sal! And even more so, thank you for catching my slight look-over. I made the mistake of not analyzing it on a tighter resolution, missing how there is a bit of a difference in Ignition logs between the posted stock and X-Pipe data.

I looked over the data and made the following graphs. When choosing the most appropriate runs to compare to by using Ignition and IAT as a control, it seems like these two runs might be more accurate.

I enjoy being candid with you all, so if anyone has any input and good information to educate us all, it would greatly be appreciated!

So I went back through all my DRFs and chose Stock_RunFile_004 based of the Ignition I hit and how it was closest to EvolveXPipe_RunFile_006. Check out the comparison and data to help support why I chose these two specific runs. Even in this case, Stock_RunFile_004 still hit higher ignition targets, although I'm not sure to how much degree this could be advantageous or not.

SAE - WHP vs WTQ


SAE - WHP vs AFR


SAE - WHP vs IAT


SAE - WHP vs IAT w/ Displayed Conditions


SAE - WHP vs Ignition

Circling back to what Sal@Evolve was saying. Here is a closer look comparing the Ignition logs between Stock_RunFile_005 and EvolveXPipe_RunFile_006. Please note how the Stock_RunFile_005 hits a bit higher ignition compared to EvolveXPipe_RunFile_006.

SAE - WHP vs Ignition

Here's a graph depicting Stock_RunFile_004, Stock_RunFile_005, and EvolveXPipe_006. Notice between the two Stock_RunFiles how Ignition may potentially affect power output, despite the minute difference in Ignition parameters.

SAE - WHP vs Ignition

And very lastly, he's a comical graph showing how easy it is to exaggerate gains by choosing the lowest measuring Stock_RunFile and highest measuring EvolveXPipe_RunFile. From my personal experience, the first few runs are usually low reading because fluids aren't up to temp, DME isn't hitting stabilized parameters, and the dyno rollers are still warming up. Pretty funny how it's so easy to "add" near 10whp delta in power by choosing misleading runs.

SAE - WHP vs TQ

Thanks for looking. I'm done 'nerding' for the night

[spool twice]

Great info! And review

[spool twice]

Originally Posted by Sal@Evolve

As always Alex,

brilliant information from you backed up with data.

Got there DRF's. The ignition timing didn't hit target with the X pipe installed. A few more runs and you would have hit them and the real gain would have been a little higher.

None the less, brilliant work.

What's really nice to see is your setup was almost hitting the stock ignition targets to start with.

For reference, here is the ignition target map and AFR target for the S65:

No wonder why the oem-state tune feels "flat" .. the ignition advance curve is virtually flat.

[whats77inaname]

Excellent gains!

In your original post (which has been edited), it mentions 200CPSI cats, but throughout this thread, everyone mentions (and you address) 100CPSI cats. Given the confusion, does the x-pipe have 100 or 200 CPSI cats?

[flipm3]

Originally Posted by whats77inaname

Excellent gains!

In your original post (which has been edited), it mentions 200CPSI cats, but throughout this thread, everyone mentions (and you address) 100CPSI cats. Given the confusion, does the x-pipe have 100 or 200 CPSI cats?

Thanks!

I apologize for the confusion. I have to go back and edit some of my posts, graphs, and video. Evolve Automotive corrected me in saying that the X-Pipe is 200cpsi.

[UBER ///M3]

Awesome writeup and information(dyno)....I love a do-it-yourselfer!!! its the best when you do your own work and bust up your knuckles haha

[Imran@Evolve]

Excellent detailed review Alex. Its great to see this much data on dyno tests like this and I hope it is eye opening for forum members to see the difference between lowest and highest runs.

[flipm3]

A few people have been asking me when I'll be getting my Evolve Tune. I sent the data to Evolve Automotive the other day and got my tune in my email Inbox this morning!

I will attempt to flash my car later tonight when I get off work/class. I'm hoping to schedule dyno time for Monday or Wednesday pending when my dyno operator gets back into town.

Stay tuned!!!

Originally Posted by UBER ///M3

Awesome writeup and information(dyno)....I love a do-it-yourselfer!!! its the best when you do your own work and bust up your knuckles haha

Thanks! It really was gratifying in the end! Thankfully I didn't break anything, LOL.

Originally Posted by Imran@Evolve

Excellent detailed review Alex. Its great to see this much data on dyno tests like this and I hope it is eye opening for forum members to see the difference between lowest and highest runs.

Thanks Imran! You guys have taught me a lot over the years, one of the biggest being, candid with the community. What makes this BMW car culture so fun is that there are a majority who are willing to be honest and candid with what they do with their car. Being the nerd I am, I love this data measurement stuff. Once the car is fully setup, I'm hoping to start doing acceleration times as well!

[spool twice]

you'll love it! can't wait to see your results so I can compare it with mine.

[flipm3]

Originally Posted by spool twice

you'll love it! can't wait to see your results so I can compare it with mine.

I know you saw my Stage 2 review, but yeah man, been loving every second of it and the thousands of miles I've put on the tune! Hopefully you're continuing to enjoy yours.

I can't wait until winter is over so I can put some real tires back on

[spool twice]

Originally Posted by flipm3

I know you saw my Stage 2 review, but yeah man, been loving every second of it and the thousands of miles I've put on the tune! Hopefully you're continuing to enjoy yours.

I can't wait until winter is over so I can put some real tires back on

Yes, I love my Evolve stage 2 tune, I wouldn't part with it for anything It unfortunately shreds my PS2's though, but thats a driver induced thing...

I need to load up my GTS-DCT file, hopefully my review will compare to yours.

[flipm3]

Originally Posted by spool twice

Yes, I love my Evolve stage 2 tune, I wouldn't part with it for anything It unfortunately shreds my PS2's though, but thats a driver induced thing...

I need to load up my GTS-DCT file, hopefully my review will compare to yours.

I love the review man! You broke everything down to the most minute detail.

Poor PS2s ... Time to upgrade to PSS!!!