I got told by the previous owner that he put a mod on the engine to stop the flat 4 burble.
Anyone know what this is? and if i change it, will it need to be remapped?

 

Equal length headers. Not sure about remapping.

 

equal length headers ?

 

He must have put an equal length header on it. The original is unequal so you get an exhaust pulse racing at different speeds down the exhaust.

Not sure about the remap side of things, am sure someone will answer that for you.

 

Too slow. Thats what happens when you start to reply to a post and then get called away by the wife!!!

 

i fitted equal length headers and still get some cool burble lol