searched but couldn't find anything specific,
Is the turbonetics t3/to4E with .63 a/r EX.with 54 trim stage 3 wheel and .50 on the compressor enough for my stock Ls.

I running 11 lbs. with lovefab sst, 3in. downpipe, 2.25 charge pipes tuned by VSV on carrolton to 267whp/240 tq.
top end kind of dies when we dynoed and just wondering if the turbo size needs upgrading.
thanks in advance

 

No, that turbo is just starting to wake up at 11psi. You should probably start looking elsewhere for the cause of the problem (if there is one). those power number look good to me.

 

if is not my turbo then I am probably looking into upgrading my spearco intercooler. and upgrading my piping after the intercooler to 2.5"

 

it's not your turbo nor is it your intercooler (unless your intercooler is too small).

more than likely it's your LS head and intake mani. these two items on an LS flow poorly and at higher rpms you'll notice the drop in power on both tq and hp. try working out something with one or both of these items and then hit the dyno. you'll be amazed at how the power will keep on climbing past redline.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shermanyang &raquo;</TD></TR><TR><TD CLASS="quote">it's not your turbo nor is it your intercooler (unless your intercooler is too small).

more than likely it's your LS head and intake mani. these two items on an LS flow poorly and at higher rpms you'll notice the drop in power on both tq and hp. try working out something with one or both of these items and then hit the dyno. you'll be amazed at how the power will keep on climbing past redline.</TD></TR></TABLE>

 

thanks for the advice, thought about getting some headwork done but not until I built the block.
thanks again.