BMS Filter, Mamo Ported TB, Borla X-Pipe - NO GAIN?!
 

After doing a lot of research on this site I decided to add the following popular "warranty safe" no tune mods on my car in this order:

Borla X-Pipe with secondary cat delete
BMS Air Filter
Mamo Portal Throttle Body

I did a stock baseline dyno and after I added each mod separately I drove the car a few hundred miles to let the stock calibration adjust. The BMS Filter did throw a code which I was able to clear and it didn't come back. My 17 Z06 M7 is running the latest stock calibration offered by GM as of May 2018. I had the car dyno'd again on the same dyno and it's pretty much putting down the same power but now running pig rich. My first though is that GM has changed the OEM calibration significantly to over correct instead of letting things lean out. Looks like it might be game over for no tune mods on later Z06s. Thoughts?

Stock Red, Mods Green
https://cimg8.ibsrv.net/gimg/www.cor...c295b0a051.png

I'm sure initially the filter and the throttle body do lean the already rich stock tune out and make some more power until the stock calibration compensates by dumping more fuel into the mix. The throttle body does create a more linear throttle response, but I wouldn't have bought it just for that. Clearly there is more power to be had, but it looks like a tune is required much like what I'm use to coming from the Mustang world. I was really surprised GM would allow the level of flexibility some claim on the stock calibration.

Many people have shown the ported throttle body isn't good for real gains. You need a 103mm TB AND a ported snout to see appreciable gains from a throttle body. Air filter on the other hand is proven to gain "something" and that's the only one that really surprises me. It doesn't look like boost was logged but you may have lost boost with it breathing better in/out. To really take advantage of what you've done, you really need a tune. Then again, that negates the "warranty friendly" piece you're going for....

I'd think you at least have better throttle response, right?

It is better but while Tony did a nice port job I wouldn't have paid $400 for a little more linear throttle response. I'm debating returning it and returning everything back to stock but the x-pipe as I'm not sure if I want to tune it yet.

I don't blame you...I wouldn't either. I blew my warranty with under 3K miles on the car though. My thought is that if something brakes, I'll replace it with something better/stronger anyway.

Get her tuned and let the fun begin.:reddevil

Here is 2300 blower, MAMO PTB, headers and tune. Full 673 rwhp and runs like a rocket this dyno was with 92 octane pump gas 1 8 oz bottle of Lucas octane boost that would do next to nothinghttps://cimg9.ibsrv.net/gimg/www.cor...9571c1f4a9.jpg
Your not getting good results because of too many mods on the stock tune is dumping tons of fuel look at your AFR. Stock Tune is not right it is not the mods! Your cutting down the mods with no clue what your doing!

Nothing wrong with that but as they say 1 change at a time. Do 3-4 changes at once is too much shown by the dyno no gain.
Go back and do just the PTB you will see a gain. Personally have seen maybe 20 posts where the MAMO works as advertised to say it doesn't deliver is wrong. I have the Halltech and PTB on my A8 with the stock tune both mods made a gain.
But adding exhaust and cat removal as well seems was too much.

Keep in mind it's really just two changes to airflow into the engine with the BMS filter and Ported TB which is supposed to be an ok combo without a tune...I guess not. Keep in mind the X-Pipe is just the secondary unmonitored CAT not the main CAT.

Results from one vehicle isn't conclusive enough to judge anything.

Before and after dyno results from the same car and same dyno aren't without merit either.

what do you mean the latest stock calibration?

did not know there was a TSB for the 2017s on that. I have not thrown a code but i have also not added anything yet... Will add the same mods as you over the next few months and will probably do a before and after dyno after a few hundred miles on the mods.

It might be a '17 thing.

All i ever read about is the '17 guys having problems with CEL's and hiccups here and there. I think '17 and '18 might be affected, but i've seen more '17s being talked about.

The following mods for 15-16 have reported almost no problems for anyone doing the mods.

I just finished the last of the 3 mods like yours this past weekend and so far it's flawless. I have a '16 though so i may have got the car from the lucky batch lol

That's what i read too.

I mean right now no CEL from the filter install but the moment it does and the code is related to the filter, then you'll see this filter for sale on this forum and i'm going back to stock.

But the PTB and xpipe were well worth the money. Definitely not changing those out,