[Force Seven]

Hi all

New here, I have m5comp 2021 lci and so far list of mods

Spacers 13mm all round and H&R 550i springs on the way to be fitted

Just removed the resinator put in straight pipes and feel the power is a bit less ? Anyone Have similar experience or is it just my imagination.

Let me know

Thanks

[Zav.f90]

Originally Posted by Force Seven

Hi all

New here, I have m5comp 2021 lci and so far list of mods

Spacers 13mm all round and H&R 550i springs on the way to be fitted

Just removed the resinator put in straight pipes and feel the power is a bit less ? Anyone Have similar experience or is it just my imagination.

Let me know

Thanks

check plugs, coil packs, n injectors, hard to lose power whith just a res delete, happens with catless downpipes tho

[pbonsalb]

A resonator delete does not add any power or take any away. Maybe you are hearing a “more powerful sound” but feeling nothing different and thinking there must be less power.

[Boostin335]

I read somewhere that it shifts the tq band up a bit, so it feels like you lost maybe a few lbs of tq but just moved it up.

Do you feel more of a dead pedal feel? or just less lungey at first tip in once pressing gas pedal

[pbonsalb]

Theoretically, reducing back pressure causes a low end torque loss, but you would not feel a few lbs out of 550 lbs.

What the OP did here was to eliminate the crossover pipe — an X inside the stock resonator or an exposed X on the Dinan X pipe, and a straight crossover pipe on some aftermarket exhausts. Few people eliminate the crossover. It is the cheap way to eliminate the resonator but maybe not the best way.

There is a utube video on adding an X pipe to an older M5 with S63 that had been straight piped by a previous owner and the consensus was that it made more power with the X pipe and sounded better. Search for it. I suspect a dyno would have shown minimal and that the big change was in the sound.

[Force Seven]

Hi

It feel like the initial torque.

But I feel mid balances it out . I may go x pipe .

Jb4 comming soon so we will see

Thx for replys