IS200t Downpipe
Thread Starter
Racer
Joined: Feb 2012
Posts: 1,729
Likes: 409
From: South FL
Remove negative terminal on battery to reset the ECU and see if it comes on again. The TTI downpipe should have an internal spacer to avoid the CEL.
Pole Position
Joined: Oct 2016
Posts: 306
Likes: 40
From: Ca
Do you have the newer style decatted dp or the older model? I’ve had my decatted dp on for 2k miles now and no CEL and mine is the first version TTI made
Driver School Candidate
Joined: Feb 2018
Posts: 24
Likes: 1
From: Singapore
I suppose should be newer one as i just got it a week ago. My workshop try using OBD but apparently cant detect any code error. Car still in workshop and they trying to solve the issue.
Thread Starter
Racer
Joined: Feb 2012
Posts: 1,729
Likes: 409
From: South FL
Got confirmation that the newer TTI downpipe does have the built in spacer. Remove the BMS system and clear the CEL by battery terminal. Drive it a bit on the stock tune to see if the light comes back on, if not then connect the BMS and you should be fine.
Driver School Candidate
Joined: Feb 2018
Posts: 24
Likes: 1
From: Singapore
Anyone know that if CEL throws up, is the car in limp mode? Really feel different, not as responsive and doesnt quite seem to be able pull beyond 4k. I know WRX does when CEL throws up.
Driver School Candidate
Joined: Feb 2018
Posts: 24
Likes: 1
From: Singapore
Instructor
Joined: Jul 2016
Posts: 782
Likes: 119
From: SoCal
I have a PPE downpipe on my RC300. Installed the O2 adapter with largest restrictor as advised by PPE. CEL went away for a couple hundred miles but returned tonight. I cleared it and it came back. Any other recommendations for O2 adapters?
Driver School Candidate
Joined: Feb 2018
Posts: 24
Likes: 1
From: Singapore
Removed BMS and tried disconnecting battery to reset ecu. Doesnt work first time. Used OBD to clear and manage to clear code. No CEL so far. Definitely feel the difference when CEL is cleared. Will be driving around for the next few days and see how it goes. Not too sure what i didnt do right with BMS.
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Pole Position
Joined: Oct 2016
Posts: 306
Likes: 40
From: Ca
Did you look inside the pipe before installing it and notice another tube on the inside that blocks off the 02 sensor from fumes? My v1 TTI downpipe has the tube inside and I haven’t had a CEL after over 2.5k miles and I don’t have the reflash. My guess is the newer version that you have got rid of the internal tube for an external 02 extender that might not be doing the job.
Thread Starter
Racer
Joined: Feb 2012
Posts: 1,729
Likes: 409
From: South FL
Tony confirmed that the new TTI dp has the same internal spacer on the 2nd O2 bung. I would try and reset the ECU again. I had a CEL issue with my PPE decatted DP (doesn't have internal tube) and eventually it went away once i added the 90 degree spacer.
Driver School Candidate
Joined: Feb 2018
Posts: 24
Likes: 1
From: Singapore
Not too sure how many here are using v2 TTi DP and wondering are they facing the same issue or maybe i got an lemon.
Driver School Candidate
Joined: Feb 2018
Posts: 24
Likes: 1
From: Singapore
Did you look inside the pipe before installing it and notice another tube on the inside that blocks off the 02 sensor from fumes? My v1 TTI downpipe has the tube inside and I haven’t had a CEL after over 2.5k miles and I don’t have the reflash. My guess is the newer version that you have got rid of the internal tube for an external 02 extender that might not be doing the job.
Thread Starter
Racer
Joined: Feb 2012
Posts: 1,729
Likes: 409
From: South FL
Thread Starter
Racer
Joined: Feb 2012
Posts: 1,729
Likes: 409
From: South FL
This is the spacer on my PPE decatted pipe.
Driver School Candidate
Joined: Feb 2018
Posts: 24
Likes: 1
From: Singapore
Thanks Sheddy, hopefully Tony will send over the right part. BTW the exhaust fumes smell are rather strong. I dont remember it to be so strong when I had my decatted DP on my STI. Its it norm?