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| Forum name | Turbo/Nitrous Tech |
| Topic subject | Greddy SP catback with stage II? |
| Topic URL | https://forums.2gnt.com/dcboard.php?az=show_topic&forum=i8&topic_id=38061 |
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38061, Greddy SP catback with stage II? Posted by soulcontroller, Jan-26-03 07:49 PM Well, I have a Greddy SP cat back and I'm going stage II this spring. I don't want to replace my exhaust, but if i'm not mistaken the piping is only 2"? Anyone have any suggestions? | |
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38066, RE: Greddy SP catback with stage II? Posted by shuwa29, Jan-26-03 10:06 PM keep the muffler and resonator and just get larger piping to replace the greddy piping. that way, same sound and better air flow. | |
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38082, RE: Greddy SP catback with stage II? Posted by soulcontroller, Jan-27-03 09:24 AM yea, it was already on when i bought the car. im going to have to measure to see if the gst piping was used or not, cause thats 2.5". | |
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38084, RE: Greddy SP catback with stage II? Posted by LunarEclipse, Jan-27-03 10:40 AM I thought the gst and gs/rs piping were the same except for the high flow muffler and extra resonator, correct me if I'm wrong | |
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38085, RE: Greddy SP catback with stage II? Posted by soulcontroller, Jan-27-03 11:13 AM tip is the same between the gst and gs/rs, but the piping is .5" bigger with the gst. well, 10 more mm anyway. | |
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38107, RE: Greddy SP catback with stage II? Posted by techboy, Jan-27-03 04:40 PM I believe the SP is 2.25 piping. You defiantely want to enlarge that somehow, either get 3" piping from a local muffler shop and have it installed or upgrade your exhuast to the EVO or something. You'll have too much backpressure. | |
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38108, RE: Greddy SP catback with stage II? Posted by Super20G, Jan-27-03 05:02 PM I had the NA greddy piping on my car when i bought it.... was boosting 18 psi on it, whoops... when i reworked the exhaust, it was almost a night and day difference in spool up... I'd just sell it on ebay... I boght a mangaflow straight through race muffler for ~100 bucks, got a new downpipe made for ~180, and catback made for ~150, sold the greddy SP on ebay for over 300... so it worked out real well, my advice is do the same thing :-), you'll be very pleased. | |
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38111, RE: Greddy SP catback with stage II? Posted by JSMOTHRS, Jan-27-03 05:27 PM I have an N1 catback all my pipes size are 2.25 inches from the downpipe to the catback and now I'm boosting 8lbs I feel a lot of back pressure I hate it cause everytime my auto shifts it sound like someone just broke wind like bad........ I'm going to get a loca muffler shop to make me a custom 3 inch piping for my exhaust. | |
