Thinking of changing me exhaust,at the mo i have scooby sport down pipe and HKS super drager.The car was mapped with the Drager fitted
if i change the exhaust will this screw the map up?
Or can i just change it with out having to have it re-mapped.
Gary

 

It shouldn't affect the fuelling too much (if the map is on the edge I'd have it checked, but if it's one of the known fellas work I would think it's done with some safety), what could be an issue is boost response - depending on how restrictive the old drager is vs. the new zorst you could get a bigger (or smaller depending) peak.

Do a few testruns before and after and see what happens.

High gear and wot from low rpm's, and going wot in a high gear with high-ish rpm's usually show any boost parameter problems with the link.

If it's a "hot" map with the drager, and you're going back to the stock OE exhaust I'd have a mapper look at it though - but I suspect this isn't the case.

/J

wot - wide open throttle

 

Come on all you techies out there some one must have some thoughts on this .
Not that i do not hear what S.A.M is saying would just like a little more input PLEASE
Gary

 

Gary,
It can´t be said much better then what Jerry said,
You need to test the boost!!!.


Skassa

 

Starship

SAM has given you a good answer. You don't say what you intend to change to which makes giving you even a ballpark answer difficult

Answer depends on the flow characteristics of the Drager vs whatever you intend to fit

If it's a big change get Bob, if it's a small change Branko may be willing to check the map for you