[2022m3x]

Seeing some mixed answers on if a tune is needed if changing intakes and modding exhaust. My specific case would be mst intakes and midpipe mod deleting secondary cat and primary resonator.
Tune necessary? Will performance be affected if no tune? Damage to car if no tune? Any feedback would be appreciated.
For those that have already done something similar without a tune, any issues?

[forcefed]

No tune needed for any intake/dp/exhaust mods, however you won't see much hp gains until you add a tune/piggyback.

[Mowe]

No tune needed. Minimal gains. Cool sounds 👊🏼.

[mike@x-ph.com]

No tune is needed, enjoy the MST intake

[vetteflier]

Deleting the CAT will cause a CEL, I believe.

[Info@mad-us.com]

Originally Posted by vetteflier

Deleting the CAT will cause a CEL, I believe.

Midpipe only deletes the secondary cats which are not monitored. No issues there. Downpipes will delete the primary which have sensors.

No tune needed but, your mods wont show full "power" potential until the car is tuned.

[2022m3x]

Installed after reading the replies. Just in it for the sound and I'm loving them! Thanks everyone.

[mike@x-ph.com]

Originally Posted by 2022m3x

Installed after reading the replies. Just in it for the sound and I'm loving them! Thanks everyone.

[Howard1485]

I’m in a bit of a dilemma but seems like my answer is here but wanted to confirm.

I’ve always been “told” that you need a tune when upgrading downpipes. It seems that is not the case looking at the posts in this thread.

So there is no negative to the car’s internals for not doing this?

[misterpiz]

Upgrading downpipes is probably even better for the car from an efficiency perspective

You don’t need a tune however you will not be maximizing your gains from the new higher flow downpipe.

Also you’ll probably throw a CEL unless you have the right spacers, with a tune you can just clear the code / code it out.

[mike@x-ph.com]

Originally Posted by Howard1485

I’m in a bit of a dilemma but seems like my answer is hear but wanted to confirm.

I’ve always been “told” that you need a tune when upgrading downpipes. It seems that is not the case looking at the posts in this thread.

So there is no negative to the car’s internals for not doing this?

Correct

[tom @ eas]

Originally Posted by 2022m3x

Seeing some mixed answers on if a tune is needed if changing intakes and modding exhaust. My specific case would be mst intakes and midpipe mod deleting secondary cat and primary resonator.
Tune necessary? Will performance be affected if no tune? Damage to car if no tune? Any feedback would be appreciated.
For those that have already done something similar without a tune, any issues?

No tune required. Neither intakes or midpipe really make any considerable to warrant specific tuning.

[Info@mad-us.com]

Originally Posted by Howard1485

I’m in a bit of a dilemma but seems like my answer is here but wanted to confirm.

I’ve always been “told” that you need a tune when upgrading downpipes. It seems that is not the case looking at the posts in this thread.

So there is no negative to the car’s internals for not doing this?

Keeping it simple here..

You do not NEED a tune. Downpipe or exhaust mods wont hurt the vehicle in anyway however, you will need a tune to take advantage of the restriction you just removed. These new cars are pretty smart and will tune accordingly to hit a certain torque and hp target. It will do this by adding or removing boost.

In this case the car will see the downpipes additional power and increased turbo spool it creates and lower boost to hit that torque hp number it was tuned to by the manufacturer.

At the minimum you would want a jb4 but a flash tune is optimal.

[tom @ eas]

Originally Posted by misterpiz

Upgrading downpipes is probably even better for the car from an efficiency perspective

You don’t need a tune however you will not be maximizing your gains from the new higher flow downpipe.

Also you’ll probably throw a CEL unless you have the right spacers, with a tune you can just clear the code / code it out.

You can also turn off Cold Start with a flash tune, which isn't required anymore without cats.

[Chicklet]

Originally Posted by 2022m3x

Seeing some mixed answers on if a tune is needed if changing intakes and modding exhaust. My specific case would be mst intakes and midpipe mod deleting secondary cat and primary resonator.
Tune necessary? Will performance be affected if no tune? Damage to car if no tune? Any feedback would be appreciated.
For those that have already done something similar without a tune, any issues?

I own a 23 G80, been researching mods, tuning etc and conversing with other owners for close to a year. The S58 is solid with stock intakes and stock DPs with a tune on stock turbo's. Unless you want sound and or is entering shows; intakes and mod exhaust are negligible. I know owners running 700+ whp on stock everything (exhaust, intakes etc) except a E-Tune. Upgraded intakes, DPs and mid-pipes becomes an important factor in performance when the turbo's are upgraded on this platform, so unless you're upgrading your turbo's, bolt-on for this platform does little to nothing for performance and will not damage anything if there is no tune.