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Exhaust system


Gino
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Hi to all. Today i've changed my exhaust system.CES racing system made for 2ZZ-GE motor:2.5 304 stainless steel pipework,custom resonator,muffler.stainless headers(ceramic coated).it seems to me that i've lost some power at low revs and gain on hi.can anyone clear my mind?is it possible.

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The CES Racing system should be 2.25" => upgraded to 2.5". After putting my '05 Sportivo on the dyno, I noticed biggest gains in lift (>6000rpm), but solid gains from about 3200rpm. Down low (ie under 2500rpm) my numbers are almost identical between standard and modified. BTW I have catback exhaust, headers and CAI from CES Racing.

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i dont think it would be causing a loss of power ..

Their (CES) systems are meant to add proven gains ..

I have a CES CAT back system with Stock Cat however no Dyno results and expect the full system to be better than cat back.

In my case i did notice a lower end lossof power after installing the CES CAI.

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Hi to all. Today i've changed my exhaust system.CES racing system made for 2ZZ-GE motor:2.5 304 stainless steel pipework,custom resonator,muffler.stainless headers(ceramic coated).it seems to me that i've lost some power at low revs and gain on hi.can anyone clear my mind?is it possible.

Yep possible if you port header you should gain a little back all over rev range

I put in a high flow cat and seemed to notice low down power came back a little.

Edited by matt_glad
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