bigjools Posted October 5, 2010 Share Posted October 5, 2010 hi guys will i still need a restritor ring on 1st/ 2end decat pipe but still runing standerd exhaust ??? just till i get my cat back system decats are 2/12 inc Link to comment Share on other sites More sharing options...
Nic Posted October 5, 2010 Share Posted October 5, 2010 You may not need the restrictor ring with both decats and stock exhaust, however I would not try to run 1.2bar with this setup - if it will actually reach 1.2bar without a boost controller. Difficult to give you a definitive answer as it varies from car to car, a case of try it and see. If you do run higher than stock boost with the stock exhaust, I would fit an EGT gauge so you can monitor temps. Link to comment Share on other sites More sharing options...
fastcar Posted October 6, 2010 Share Posted October 6, 2010 To be honest i would buy the cat back system first. And then get the decats at a later date. The origanl exhaust would i think be quite restrictvie and may over heat thing's. My theroy with exhaust is work from back to front. Link to comment Share on other sites More sharing options...
bigjools Posted October 6, 2010 Author Share Posted October 6, 2010 bump Link to comment Share on other sites More sharing options...
Nic Posted October 6, 2010 Share Posted October 6, 2010 What more do you want to know? Link to comment Share on other sites More sharing options...
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