Primary Cat delete pipes coming, best solution for permanently deleting o2 CEL?
#16
03EvoII, cant wait for your next update, I'm subscribed. I do hope you get some photos and video up too. It'll be nice to have a company make a reasonably priced primary cat delete.
Looking through your mods scares me a little though, can the stock computer handle those mods? Any turbo vehicle that I've dealt with has needed some ecu tuning to handle that much extra flow. Please tell me you have a wideband too and will be watching it like a hawk. I'd hate for you to hurt your motor.
Looking through your mods scares me a little though, can the stock computer handle those mods? Any turbo vehicle that I've dealt with has needed some ecu tuning to handle that much extra flow. Please tell me you have a wideband too and will be watching it like a hawk. I'd hate for you to hurt your motor.
I get a little worried too to be honest but I'm playing it pretty safe right now. With the MBC I can modulate boost down to as little as ~7psi (.4-.5 bar), where as with the factory boost solenoid I was pegging the stock boost gauge pretty easily (Maybe my CTT has a tune already
![Confused](https://www.6speedonline.com/forums/images/smilies/confused.gif)
![Big Grin](https://www.6speedonline.com/forums/images/smilies/biggrin.gif)
I can't afford a new motor right now either!
![hilarious](https://www.6speedonline.com/forums/images/smilies/smLach2.gif)
I'll post some updates this week for sure!
Last edited by 03EvoIII; 02-04-2012 at 01:16 PM.
#17
Hey Scot - have you thought about getting a pair of O2 sims to prevent a cel? Don't think I've seen them specifically for a CTT though. I know that Burger Tuning makes sims for the BMW 335 - perhaps you can give them a call and ask if they can make a set for your CTT? Another guy who may be able to help is Andrew at AR Design.
#18
^^^That would be great. I'll see what I can find. Maybe they wouldn't be too hard to retrofit into the ctt. I'll let you know. As for now, they are going to add some o2 foulers/spacers to hopefully take care of the CEL's. I'll let you guys know if they do the job or not.
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#19
^^^That would be great. I'll see what I can find. Maybe they wouldn't be too hard to retrofit into the ctt. I'll let you know. As for now, they are going to add some o2 foulers/spacers to hopefully take care of the CEL's. I'll let you guys know if they do the job or not. ![Big Grin](https://www.6speedonline.com/forums/images/smilies/biggrin.gif)
![Big Grin](https://www.6speedonline.com/forums/images/smilies/biggrin.gif)
#20
While I don't know him personally, the owner of Burger Tuning is Terry Burger and based on what I've heard/read about him he's a great guy. I'm guessing he'll be willing to work with you (or at least give you additional ideas) if you give him a call. http://burgertuning.com/
#24
Interested in seeing how this plays out. I would think you would just need an O2 simulator that operates in the same voltage range as the Cayenne's.
Would be curious to see what A/F ratios are etc. Not sure how the ECU reacts to increased boost without being retuned. I would imagine Porsche would either add fuel accordingly or have some sort of overboost trouble code if it were to reach a dangerous level.
Would be curious to see what A/F ratios are etc. Not sure how the ECU reacts to increased boost without being retuned. I would imagine Porsche would either add fuel accordingly or have some sort of overboost trouble code if it were to reach a dangerous level.
#25
rsa supra:
No CEL's at all so far. Just o2 extenders/foulers on right now too, so that is promising. Of course all cars are different, so just because my car doesn't trip the CEL's doesn't mean someone else's wouldn't. Eventually o2 sims would be the way to go. I've been monitoring a/f as well. At 6-7 psi, a/f is ~ 13.0. I'm turning up the boost slowly with the boost controller. I was pegging the stock boost gauge at .8 bar (11-12 psi) with my stock exhaust, so I'd like to be back in that range with the new straight pipes in. Looking at other dyno graphs, It should settle down into the 12.0/1 range at that boost. I've heard that there is an over-boost function built in as well, which I think it just takes out some timing/limp mode. My butt dyno says these added some power and definitely a lot of response.
No CEL's at all so far. Just o2 extenders/foulers on right now too, so that is promising. Of course all cars are different, so just because my car doesn't trip the CEL's doesn't mean someone else's wouldn't. Eventually o2 sims would be the way to go. I've been monitoring a/f as well. At 6-7 psi, a/f is ~ 13.0. I'm turning up the boost slowly with the boost controller. I was pegging the stock boost gauge at .8 bar (11-12 psi) with my stock exhaust, so I'd like to be back in that range with the new straight pipes in. Looking at other dyno graphs, It should settle down into the 12.0/1 range at that boost. I've heard that there is an over-boost function built in as well, which I think it just takes out some timing/limp mode. My butt dyno says these added some power and definitely a lot of response.
Last edited by 03EvoIII; 02-11-2012 at 01:51 PM.
#28
Still deciding how I should attempt getting rid of my CEL since my primary cat delete. It appears these would do the trick, but they seem awfully pricey for what they are (price is each, I confirmed)
http://www.greenmotorsport.us/servle...icat%29/Detail
http://www.greenmotorsport.us/servle...icat%29/Detail
#29
Still deciding how I should attempt getting rid of my CEL since my primary cat delete. It appears these would do the trick, but they seem awfully pricey for what they are (price is each, I confirmed)
http://www.greenmotorsport.us/servle...icat%29/Detail
http://www.greenmotorsport.us/servle...icat%29/Detail
You ever run your CTT at the track? I think you were going for 12's right?
#30
Sounds like a plan. Might be a dumb question, but are they one size fits all?