Picked up an IS300
Thread Starter
Driver School Candidate
Joined: Apr 2014
Posts: 9
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From: CA
Picked up an IS300
Hello all. I was lucky enough to purchase a used 2005 IS300, and I'm loving it so far. I plan on keeping it mostly stock since it will be my DD. It's throwing the P0430 code at the moment, but I will get that taken care of before the smog in October. If it is the CAT, has anyone reviewed the Magnaflow CA legal headers? Thanks.
Driver School Candidate
Joined: Apr 2014
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From: Hawaii
Welcome to Forums, I'm new member too. I have a 300 250 and 350. The Is300 has a harder time finding after market headers. After intense research and tryin to find a header, I learned the best on the market now is the Megan Header with Y pipe. Unfortunatly, the header is backordered but y pipe in stock. No eta. Your gonna get a CEL light. But you have several options to fix that.
Thread Starter
Driver School Candidate
Joined: Apr 2014
Posts: 9
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From: CA
Nice to meet you. I was trying to keep this car stock, but an added $300 for California CARB legal headers is ridiculous! (Part # below) I used to be a part of the domestic scene and have no smog equipment on my Trans Am. Can the CEL light be tuned out, or would I need a module like the one I saw online to bypass the code? Thanks.
Last edited by Blue2JZGE; May 19, 2014 at 12:24 PM.
Driver School Candidate
Joined: Apr 2014
Posts: 37
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From: Hawaii
There are two ways:
- mechanical unit that electronically disables CEL. Sorry can't remember the name. COBB Tuning???
- trick the O2 sensor by adding a spacer that pulls the O2 farther away.
Second way would probably be the easier and cheaper way. I would recommend this route. Less electrical work.
- mechanical unit that electronically disables CEL. Sorry can't remember the name. COBB Tuning???
- trick the O2 sensor by adding a spacer that pulls the O2 farther away.
Second way would probably be the easier and cheaper way. I would recommend this route. Less electrical work.
Thread Starter
Driver School Candidate
Joined: Apr 2014
Posts: 9
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From: CA
^Thanks! I ended up finding some CA legal Magnaflow headers. (Part number 452843 for you Californias who want to keep your car a DD) I painted the calipers this week, and I'm working on the deck and speakers today.
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Driver School Candidate
Joined: Mar 2013
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From: Ny
So the high flow magna flow headers for the is300 are a good choice, mixed in with the Megan racing stainless steel y pipe and your good. It will cost you like $1000 for the whole set up, but it was worth it, in the end. No check engine light.
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Driver
Joined: Feb 2013
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From: Ca
I thought those headers were just an OEM replacement? Do you have pics?
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Driver School Candidate
Joined: Apr 2014
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From: CA
I replaced the stock manifolds only, and no CEL light for 200 miles so far.
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Driver School Candidate
Joined: Apr 2014
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From: CA
These are the Magnaflow version of the stock manifolds but with high flow cats. I've noticed beter gas mileage (probably due to the bad cat in my stock manifolds) and a little of engine noise at WOT.
