Intake & Exhaust Restrictions

[lovelessnator]

Hey guys I've got a r33gtst making a tad over 300rwkw but I've noticed when getting on the gas it's not a smooth power right the way through the rev range, it sort of feels like it comes on in section! But in saying that its very minamal an hard to notice. The only reason I picked it is because you can hear the "section" because of the screamer pipe.

I'm thinking maybe it's slightly restricted?? Two things I've noticed is

1) the exhaust is 4inch dump to a straight through 3inch system with a spaghetti can on the rear but the inside of the spaghetti can reduces back down to 2 1/4inchs!

2) is the intake to the 35/40. It's 4inchs an then reduces down to fit the z32 afm (2.5inchs?) then to a pod filter.

I'm definatly going to replace the exhaust can to keep it running 3inchs all the way threw but what are your thought on the intake? Would I see a restriction there?

Cheers

[kaneryan]

hey mate,

Z32 AFM are 80mm so thats 3.14 inch........

[Hadouken]

Did you ask your tuner if he "staged" the boost. low boost until your upto speed and then it hits full boost? Thats the first thing I would do

[34GeeTeeTee]

I have a restrictive 3in exhaust and making well over 300kw smooth az.... Restriction is not likely to be the cause, has it just been tuned?

[lovelessnator]

I haven't as this is how I brought the car but it will be getting a look over very soon as its booked in for a e85 tune so he'll tell me if anything seems sus on the dyno