Exhaust system choices
#1
Driver School Candidate
Thread Starter
Exhaust system choices
Anyone try these https://thmotorsports.com/megan-raci.../i-520206.aspx
Last edited by ccurtin1; 02-19-17 at 04:53 AM. Reason: Better link
#2
Lexus Test Driver
Anyone try these https://thmotorsports.com/megan-raci.../i-520206.aspx
see post 21 after you click on this link.
https://www.clublexus.com/forums/sc4...magnaflow.html
Last edited by Bgw70; 02-19-17 at 06:01 AM.
#3
Have not seen an reports of more power from exhaust changes. The 4.3 engine has three cat converters and the small diameter exhaust system seems well matched to the smaller engine. 262? Cu in.
Unless you just to make it sound different?
Unless you just to make it sound different?
#5
Only info I found was 8hp increase mostly at low rpm. Might get more with 93 octane?
#6
Lexus Test Driver
Just researching, but some claims of more HP with exhaust change like here:
https://youtu.be/VvMzYD5WeXA
https://youtu.be/VvMzYD5WeXA
Last edited by Bgw70; 02-20-17 at 05:12 AM.
#7
Pole Position
My gripe is that all the products I have seen still only use one centerpipe to and from the third cat, so it would seem there is an inherent backup in the system.
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#8
Lexus Test Driver
why dont you just go the route I used, it only cost about $100 or was it $80, either way the car has a nice sound now and she breathes a little easier. The O2 sensors were not compromised and the CEL is off.
#9
Pole Position
I actually took off an aftermarket exhaust and put the stock one back on.
In your other post BGW, you said "If you do not join the exhaust, you basically have two four cylinder engines... "
Can you explain this more? Are you just talking about the sound?
And do you work for/own a Midas?
In your other post BGW, you said "If you do not join the exhaust, you basically have two four cylinder engines... "
Can you explain this more? Are you just talking about the sound?
And do you work for/own a Midas?
#10
Lexus Test Driver
I actually took off an aftermarket exhaust and put the stock one back on.
In your other post BGW, you said "If you do not join the exhaust, you basically have two four cylinder engines... "
Can you explain this more? Are you just talking about the sound?
And do you work for/own a Midas?
In your other post BGW, you said "If you do not join the exhaust, you basically have two four cylinder engines... "
Can you explain this more? Are you just talking about the sound?
And do you work for/own a Midas?
In that thread, coleroad provided a link all about exhaust systems.
there is also another video of a very open system.
i should make another video with the car driving down the road.
i don't work or own a Midas shop, I work for a defense contractor and perform communications flight testing.
#11
Pole Position
Ah, Defense Contractor, That makes more sense.
I just scanned through the post and wasn't reading it too close. I was a little surprised when I read "Several of us at Midas discussed this and decided we should continue to allow the exhaust to join at the original catalyst point because:
Toyota designed it that way and we did not know if the muffler would join the exhaust."
I just scanned through the post and wasn't reading it too close. I was a little surprised when I read "Several of us at Midas discussed this and decided we should continue to allow the exhaust to join at the original catalyst point because:
Toyota designed it that way and we did not know if the muffler would join the exhaust."
#12
Lexus Test Driver
Ah, Defense Contractor, That makes more sense.
I just scanned through the post and wasn't reading it too close. I was a little surprised when I read "Several of us at Midas discussed this and decided we should continue to allow the exhaust to join at the original catalyst point because:
Toyota designed it that way and we did not know if the muffler would join the exhaust."
I just scanned through the post and wasn't reading it too close. I was a little surprised when I read "Several of us at Midas discussed this and decided we should continue to allow the exhaust to join at the original catalyst point because:
Toyota designed it that way and we did not know if the muffler would join the exhaust."
i started out considering a magnaflow system but decided to just remove parts. I now have two cats and two mufflers; she has a nice sound, IMO.
#13
I'm happy with my PPE headers, resonator delete and replaced the stock mufflers with Borla mufflers. Grumbles up until 1500RPM and purrs thereafter. Not sure if it's worth it to get rid of the crush bend just before the mufflers?
#14
backpressure in a four stroke engine can be part of the reversionary wave tuning that goes back through the exhaust valves.
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