gt2871r

[JDMPowerdS13]

so i have an s13 sr20 with 272 cams gt2871r with .86 exhaust i'm not seeing full boost till 4300 is that normal for this set up or do i have an issue please let me know if anyone else with this set up had an issue or is it just me thanks

[Nismo180]

What psi is "full boost"? What kind of boost control are you using? My .64 housing goes positive pressure at ~2k depending on gear and the temp outside and such but doesn't hit 17 psi until around 3500. So, yeah given your larger A/R and arguably over sized cams 4k to hit a respectable level of boost sounds about right.

[JDMPowerdS13]

full boost is 14psi right now, ya when i step on it it goes positive an builds boost kind of slow till about 4 then its all there

[codyace]

Sounds about normal for an overcammed 2871r .86 housing

[JDMPowerdS13]

ok sounds good to me thanks

[auk113]

yea i had a simmilar setup and 18psi of boost would kick in around that rpm

[fliprayzin240sx]

Also depends on how it is tuned. If its tuned for more top end, itll spool a tad bit later.