Dave_harman1990 Posted September 1, 2013 Share Posted September 1, 2013 Hi people, just want to double check but upto 500bhp with least lag and most torque I am right in thinking a full 3" system would be best or would anyone recommend a bigger bore? Is there a bhp limit where the 3" cant flow enough so would need a bigger bore? Thanks Dave Link to comment Share on other sites More sharing options...
chris0132 Posted September 1, 2013 Share Posted September 1, 2013 I'm pretty sure 3" is sufficient to like 700bhp I'm sure I read that on here before Link to comment Share on other sites More sharing options...
Dave_harman1990 Posted September 1, 2013 Author Share Posted September 1, 2013 That's good at least makes life easier. Also I cant find the answer but what is the safest bhp do able from the stock 2jzgte Injectors and max figure the clutch can take before slipping baring in mind age use and abuse? Link to comment Share on other sites More sharing options...
Nic Posted September 2, 2013 Share Posted September 2, 2013 That's good at least makes life easier. Also I cant find the answer but what is the safest bhp do able from the stock 2jzgte Injectors and max figure the clutch can take before slipping baring in mind age use and abuse? J-spec injectors 440cc - just over 400hp UK injectors 540cc - just over 500hp. The stock clutch will cope at BPU levels of performance ie. circa 400hp. Link to comment Share on other sites More sharing options...
Chris Wilson Posted September 2, 2013 Share Posted September 2, 2013 When I saw the title I thought DavidP would be a likely winner, with his N/A manifold repair sagas No offence David, you know I love you really Link to comment Share on other sites More sharing options...
Gpro Posted September 2, 2013 Share Posted September 2, 2013 4" downpipe/midpipe would help with spool and generate more power at the same boost (Proven). Better future proof it if you think you might be going higher hp in the future Link to comment Share on other sites More sharing options...
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