3" to 4" charge pipe.. Bad, good?
#1
3" to 4" charge pipe.. Bad, good?
I just got through fabbing up a 4" charge pipe from intercooler to throttle body. The SPIKE turbo kit came with all 3", but I'm gonna run more boost in the near future after this tranny swap, so I fatten up the charge pipe some so my MAF wouldn't max out. My concern, are there any downfalls to running larger charge piping? Seems like everyone runs 3" or 3.5" max?
#3
Formerly ScreamingL
I just got through fabbing up a 4" charge pipe from intercooler to throttle body. The SPIKE turbo kit came with all 3", but I'm gonna run more boost in the near future after this tranny swap, so I fatten up the charge pipe some so my MAF wouldn't max out. My concern, are there any downfalls to running larger charge piping? Seems like everyone runs 3" or 3.5" max?
also on a maf based setup youll want the range of the 4" tube
#4
That's exactly why I needed the 4" piping, for the range! With the 3" my ls3/7 MAF was maxing out around 9ish pounds.
#6
TECH Junkie
iTrader: (9)
I would really like to see some testing on this. I run 3.5" from my turbo in and out of my intercooler to my throttle body. My father in law has a 600+ cubic inch pulling tractor and he runs a 3" pipe off of the intercooler and 3" throttle body at over 100 PSI of boost and he thinks it isn't hurting him. I would like to test it with a pressure sensor in the intake to see if there is a pressure drop from the restrictive pipe.
#7
Formerly ScreamingL
you want to keep the size of turbo to the intercooler
example my old pt91.5 was 4" outlet, that would be 4 to intercooler and 4 to tb
my twin 7675 are 3" outlet so 3 to the intercooler inlets then 4" out
other setups ive done...2.5 out of turbos...so 2.5 to intercooler then 4 to tb
since all tbs are 4" ive used
example my old pt91.5 was 4" outlet, that would be 4 to intercooler and 4 to tb
my twin 7675 are 3" outlet so 3 to the intercooler inlets then 4" out
other setups ive done...2.5 out of turbos...so 2.5 to intercooler then 4 to tb
since all tbs are 4" ive used
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#10
Formerly ScreamingL
i always dyno no filter, then run on street with filter...may richen up some but least safer then being tuned for fitler then removing filter.
saw enough filters that caused restrictions or issues in boost to run them when running hard
saw enough filters that caused restrictions or issues in boost to run them when running hard