Oops I completely misread that! Sorry about that. I just checked it out and you are right, JUN-TW made around 240whp just with their headers and straight exahust. That is pretty nuts I must say. Who knew the IS250 had it in herhey Jahn,I'm pretty sure mazzuri claims a gain of 32rwt and 25rwhp or it could be the other way around pretty huge gains I believe around 195rwt and 187rwhp or the other way around ,mazzuri are local to our continent and proven.Jun is a japanese company but it JUN-TW I believe taiwan that makes those headers.they claim 238rwhp with their straight exhaust,massive gains:worship:
I think I have figured out the CEL issue. So far 150 miles with no CEL, I want to give it another 150 before I am sure.daniel I will be ordering headers soon,I already have custom exhaust system,just need to remove secondary cats once I get new headers. Have you corrected CEL if so I wil order from you.I am sure rear wheel hp #'s will be around same between mazzuri and jun with straight exhaust.