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Discussion Starter #1
THE BIC DDP WILL NOT WORK WITH THE SP61GT. after close inspection the flapper was hitting the dp. i'll post pics later. the bet the flapper wasn't even opening half way.
 

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ma70-7m=1JZ
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Where was it hitting?, was the arm hitting on the bottom of the flanges, or was the flapper hitting the divider plate?. This is why I am making a SP specific ddp. I have the first prototype ready now.

Normally wasetgates dont open up all the way. The stock CT26 flapper only lifts about 3/16" - 1/4" at the most before the arm will hit the stock turbo elbow.
 

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Discussion Starter #6
i thought the wastegate on these turbos open up all the way.. i'm going to check for signs of it hitting the dp.
 
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