Quiet down the exhaust
#1
Quiet down the exhaust
A little history: 2012 purchased as CPO this past January. From day one, I thought the exhaust was a bit loud and exhibited some drone at lower RPMs. Before I purchased, the last time I'd driven an IS-F was 2009 when my salesman offered me an overnight test drive. I don't recall it being so noisy under 3K RPM.
Since the purchase, the noise has begun to annoy me (it's a DD). There's definite drone at lower RPMs. Further research on this forum, along with discussions with fellow car enthusiasts has convinced me that the previous owner has modified the exhaust. Whatever was done (or wrong with it), I don't like it. For me, a major attraction of a car like the IS-F is the somewhat stealthy nature of it. I love the roar at WOT, but I don't want a noisy car during routine driving.
Should I bother taking it to the local dealer to diagnose? I guess there's no harm in that even if they refuse to replace modified parts. Though, I suspect they'd laugh me off if they find the exhaust has been modified. Asking the dealer to restore it to stock would likely be too much $$.
Should I just find a reputable performance/muffler shop in the area to make the necessary changes to quiet the exhaust? I don't care about the loss of whatever few HP was gained by the mod. However, I don't want to end up with less than stock numbers...
-Mike
Since the purchase, the noise has begun to annoy me (it's a DD). There's definite drone at lower RPMs. Further research on this forum, along with discussions with fellow car enthusiasts has convinced me that the previous owner has modified the exhaust. Whatever was done (or wrong with it), I don't like it. For me, a major attraction of a car like the IS-F is the somewhat stealthy nature of it. I love the roar at WOT, but I don't want a noisy car during routine driving.
Should I bother taking it to the local dealer to diagnose? I guess there's no harm in that even if they refuse to replace modified parts. Though, I suspect they'd laugh me off if they find the exhaust has been modified. Asking the dealer to restore it to stock would likely be too much $$.
Should I just find a reputable performance/muffler shop in the area to make the necessary changes to quiet the exhaust? I don't care about the loss of whatever few HP was gained by the mod. However, I don't want to end up with less than stock numbers...
-Mike
Last edited by mikersoft; 05-13-14 at 04:26 PM.
#2
Lexus Champion
Take it to a good indy shop and have them put it on a lift to see if any mods were done. If so, find used OEM exhaust, go back to good indy shop and have them install it.
#3
Lexus Fanatic
with all the guys on here with exhausts Im sure you could find a used one pretty easy. IN FACT I saw used oem exhausts on ebay !!
Funny how these posts keep popping up every time I think about doing an exhaust. I had my last exhaust taken off because of the droning and the one in my G35 was so loud that it rattled the b pillars and interior panels ( had more than just cat back though...a lot more .lol)
Funny how these posts keep popping up every time I think about doing an exhaust. I had my last exhaust taken off because of the droning and the one in my G35 was so loud that it rattled the b pillars and interior panels ( had more than just cat back though...a lot more .lol)
#7
I'm thinking the 8 speed transmission in the IS-F might also be a factor (compared to previous cars I've owned). In auto, it often seems to be in a gear higher than desired in under anything other than very mild acceleration.
Thanks, it might be worth the early morning trip for that (along with the other automobile eye candy!).
-Mike
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