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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Dyno Results 328xi (Stock vs Modified)



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      11-12-2012, 05:47 PM   #67
DESI4life10
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Quote:
Originally Posted by DUI Elite View Post
Hey desi4life, would the secondary cat delete cause a "service engine soon" light?

What do you think about doing the secondary cat delete + magnaflow muffler.

Trying to ball on a budget for now lol.

Hey,
You won't get a service light if you remove secondary cats. They are located after the rear O2 sensor, so you are good.

You may get a few hp bumps. but I don't think it will be like remove primary cats.
You will have a nice sound with that setup. Nothing wrong with modding on a budget :-) Hope all works out for ya
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      11-12-2012, 05:50 PM   #68
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Originally Posted by Rival View Post
im one of them.... looks like i will be buying a 06 325 all stock as of now, AA tune, 3 stg manifold, 2nd cat delete, charcol delete will all get done in the 1st month or so.....

so this thread is helpful
Awesome. Congrats on the new addition :-)

I wanted this thread to be a source of information for a car going through a transformation.
Seeing the gains over time really shows what each mod can do for your car.
Let me know if you have any questions.
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      11-12-2012, 05:51 PM   #69
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Big torque jump, nice.
Thanks :-)

def feels great in the midrange
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      11-12-2012, 06:56 PM   #70
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I think toronto is the closest place I can have my car flashed with the AA tune. I have to get that planned up for spring.
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      11-12-2012, 07:18 PM   #71
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Quote:
Originally Posted by DESI4life10 View Post
Hey,
You won't get a service light if you remove secondary cats. They are located after the rear O2 sensor, so you are good.

You may get a few hp bumps. but I don't think it will be like remove primary cats.
You will have a nice sound with that setup. Nothing wrong with modding on a budget :-) Hope all works out for ya
Sounds good. Would I not pass a sniff test for emissions? Illinois currently only requires OBD hook up to see that all the sensors are ready / clear of faults.

Also, last question:
Know what sounds like a reasonable price for the 2ndary cat delete? I've been getting a few quotes. All seem relatively high.

Thanks for all the help. This thread is the epitome of useful.
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      11-13-2012, 09:02 AM   #72
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Quote:
Originally Posted by DUI Elite View Post
Sounds good. Would I not pass a sniff test for emissions? Illinois currently only requires OBD hook up to see that all the sensors are ready / clear of faults.

Also, last question:
Know what sounds like a reasonable price for the 2ndary cat delete? I've been getting a few quotes. All seem relatively high.

Thanks for all the help. This thread is the epitome of useful.
I don't think you will have a problem with a sniff test when your secondary cats are removed. The primary cats are the more important ones.

I haven't removed my secondary cats so I am not positive on teh price. However, I have seen prices range from $100-$200 area.

Thanks for the comments :-)
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      01-21-2013, 09:31 PM   #73
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Wow..Nice in depth review of the modifications. I am looking to go this route as well, so this definately helps show that all the mods work (3 stage and the AA tune).
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