hihelloray

Hey, everyone, I'm new here and this is my first thread. I just installed an Invidia q300 in my 2014 is250 and reason why I got it I read that it was a quiet exhaust just a little louder than stock but i notice it is actually pretty loud especially at 2500rpm. Should I have gone with a Tanabe Medallion exhaust if I'm looking for an exhaust that is a bit quieter? I want a nice settle growl when accelerating since stock is too quiet even at high RPMs

3ISOwner

Did you get the full catback system? If you only got the axleback, the Q300 is pretty quiet.

hihelloray

just the axle back and yeah I was surprised myself assuming it would be quiet and I had experience with many different type/brand exhaust in the past.

Rudiculous

iTrader: (15)

Are you sure it's the Q300 and not the Q300H?

Tanabe and F Sport are also quiet axle backs

jay90011

iTrader: (23)

Maybe an exhaust leak at the connection with Midpipe that is causing it to be loud?

hihelloray

You're right. I placed my order for a Q300 and did research on the invdia site the part number i ordered matched up but the seller on ebay sent me the q300h and told me thats the only one that invdia makes for this vehicle.

hihelloray

i just contacted Invidia and they informed me that part number for the q300 HS13L1SG3S is the only option q300 exhaust for my vehicle unless i wanted burnt tips. Basically all q300 exhaust for 3rd gen lexus is250/350 is a q300h

fivesevenn

hmm, good to know info, is this drone or just loud you are talking about around 2500rpm.

hihelloray

i guess you can say loud drone at 2500 rpm. Even at low rpm there is a slight drone which is normal even tho some people claim the q300 does not drone while cruising. i can verify that it does drone while crusing haha

Fsportme

Sound is so subjective pending the person. So is it loud only on acceleration or cruising at that rpm? I have the same q300 axleback and it will growl when you go full wide open throttle but that's it. The few threads I found about drone seem to happen under load and at a certain rpm. Does it drone in all modes i.e. Sport, Sport+ or Eco mode? I'm starting to think the drone is more apparent on the 250's rather than the 350's.

leo877

Post a video. I surprise that you say axle back exhaust is loud. I have JoeZ axle back, Invidia midpipe and Fsport intake. There's drone at 2500-2700 rpm when I had only JoeZ axle back, and drone at 2100-2300 rpm when midpipe added.

It's not really loud when you get used to it. Here's my cold start clip (trimmed):

Rav5280

Pittsy

Ive had my Invidia q300 axelback on for a while now, and i love it, but Its not loud enough for me. I turn some heads when i keep my revs low, but i want to straight up scare some people LOL. The axelback adds such a minuscule amount of power it is unnoticeable. However the increased airflow does add a small amount of power.

TOPENDMS

There are a lot of sound clips on YouTube for the IS model exhausts. The Invidia exhaust definitely sounds much louder than Tanabe.

Rav5280

Ya I installed my Invidia axle back the day it arrived. never done anything exhaust related before so it took me about 1.5 hours due to doing it at night and trying to get the rubber off the hangers. definitely a good experience for future though. it'll be a week on Friday and I believe I read that it takes about that long to break in. Does it become louder after the break-in period? Overall this axle back matched with the Tanabe intake sounds great IMO. and it definitely seems like its added some power, at least off the start, but could just be the placebo effect of the sound haha. Ive seen videos of revving with the full cat-back exhaust but I'd like to see what it sounds like from inside the cabin while driving normally. any thoughts on mid pipe?