Performance Parts

[chris525i 2]

Hello all. I have a 97 525i and was wondering where in cantebury (or NZ if need be) i can get good performance upgrades, e.g, exhaust systems, intake systems, fuel supply upgrades etc.

Any help would be appreciated.

[Allanw 1051]

The Jap 525i was the same as the 523i everywhere else.

You can also hunt for 323i upgrades.

They weren't a particularly grunty motor though. Most cheap ad ons don't acheive much, although they have quite a restrictive intake (the plenum and runners, NOT the pipes and filters), which you can swap, but it sounds like most people report a low down torque loss to acheive more top end.

My sisters old 525i used to go ok, but it was low down that it suffered a bit - It always needed a fair few revs on board to get anywhere. I'm not sure what could realistically be acheived to help that for not too much money.

If I wanted to improve performance, I'd seriously look at a manual conversion - not super cheap, but you will make the car a lot more fun to drive AND get rid of a potentially expensive auto repair.

Our manual 525i is the later M54 engine, but it is actually pretty quick.

[BM WORLD 1261]

swap the engine for a 328i 528i one

[Allanw 1051]

swap the engine for a 328i 528i one

while doing the manual conversion

[Mark 178]

Buy a 540i

[chris525i 2]

swap the engine for a 328i 528i one

I was thinking i may need to do an engine swap, however I'm unsure what will fit and what will boast the most power.

[Greg111 13]

I was thinking i may need to do an engine swap, however I'm unsure what will fit and what will boast the most power.

A 4.0L will boast the most power.

[westy 614]

A 4.4L will boast the most power.

[Greg111 13]

That's the spirit.

[No name user 379]

hang a turbo off it