# How much boost can i safely run on this setup
**URL:** https://forums.speedlife.net/t/how-much-boost-can-i-safely-run-on-this-setup/146786
**Category:** Canada Nissan Automotive
**Created:** [May 17, 2007, 8:56am UTC](https://forums.speedlife.net/t/how-much-boost-can-i-safely-run-on-this-setup/146786 "2007-05-17T08:56:11Z")
**Posts on this page:** 13
**Page:** 1
### Author:  [@240DRIFTz](https://forums.speedlife.net/u/240DRIFTz)
#### Post date: [May 17, 2007, 8:56am UTC](https://forums.speedlife.net/t/how-much-boost-can-i-safely-run-on-this-setup/146786/1 "2007-05-17T08:56:11Z")
Just wondering if 13-14psi is too high for this setup
Red Top SR20DET
Megan Racing FMIC
Megan Racing SS Tubular Manifold
t28 BB Turbo
Megan Turbo Elbow
Megan Downpipe
Megan test Pipe
Megan MR catback
---
### Author:  [@silviadrftr](https://forums.speedlife.net/u/silviadrftr)
#### Post date: [May 17, 2007, 9:06am UTC](https://forums.speedlife.net/t/how-much-boost-can-i-safely-run-on-this-setup/146786/2 "2007-05-17T09:06:09Z")
what injectors are you running?
---
### Author:  [@240DRIFTz](https://forums.speedlife.net/u/240DRIFTz)
#### Post date: [May 17, 2007, 9:06am UTC](https://forums.speedlife.net/t/how-much-boost-can-i-safely-run-on-this-setup/146786/3 "2007-05-17T09:06:38Z")
stock
---
### Author:  [@InitialD](https://forums.speedlife.net/u/InitialD)
#### Post date: [May 17, 2007, 9:24am UTC](https://forums.speedlife.net/t/how-much-boost-can-i-safely-run-on-this-setup/146786/4 "2007-05-17T09:24:04Z")
TUNE IT OR BLOW IT :anal
---
### Author:  [@240DRIFTz](https://forums.speedlife.net/u/240DRIFTz)
#### Post date: [May 17, 2007, 9:32am UTC](https://forums.speedlife.net/t/how-much-boost-can-i-safely-run-on-this-setup/146786/5 "2007-05-17T09:32:21Z")
So your saying its safer to dyno the car get it tuned then up the boost?
im also looking at this fuel setup…550’s, z32 maf and getting my ecu chipped
if i get the ECU chipped would i still have to dyno the car afterwards? and how much boost is safe after the fuel upgrade?
---
### Author:  [@InitialD](https://forums.speedlife.net/u/InitialD)
#### Post date: [May 17, 2007, 9:33am UTC](https://forums.speedlife.net/t/how-much-boost-can-i-safely-run-on-this-setup/146786/6 "2007-05-17T09:33:59Z")
umm stock s13 turbo thoes mods are meh…
get at least s14 turbo, dont chip, get safc most def tune after words, get a HG then u can go to 18ish ask rob, he’ll tell u how much u can
---
### Author:  [@beatshack](https://forums.speedlife.net/u/beatshack)
#### Post date: [May 17, 2007, 9:37am UTC](https://forums.speedlife.net/t/how-much-boost-can-i-safely-run-on-this-setup/146786/7 "2007-05-17T09:37:31Z")
yeah… don’t be running 15psi on that turbo on the 370’s. 15psi is what you should be running with 550’s, z32 maf and tuned ecu to accomodate the 550’s. You will never get a proper tune with just an safc.
if i were you i’d stick to the wastegate setting for now.
---
### Author:  [@silviadrftr](https://forums.speedlife.net/u/silviadrftr)
#### Post date: [May 17, 2007, 10:10am UTC](https://forums.speedlife.net/t/how-much-boost-can-i-safely-run-on-this-setup/146786/8 "2007-05-17T10:10:58Z")
safc is junk. Enthalpy rom tune is the way to go, 550’s and 18 psi will be fine on that setup as long as it is a t28 bb turbo, but always make sure to put it on the dyno to see what your a/f ratio is (unless you have a wideband) just make sure you dont cheap out on the rom tune, enthalpy is expensive ($500) but he is VERY VERY good.
---
### Author:  [@240DRIFTz](https://forums.speedlife.net/u/240DRIFTz)
#### Post date: [May 17, 2007, 10:11am UTC](https://forums.speedlife.net/t/how-much-boost-can-i-safely-run-on-this-setup/146786/9 "2007-05-17T10:11:42Z")
its not a stock s13 turbo its a t28 from an s15…so SAFC then dyno? also once i get the 550’s and maf the car will need a tune regardless right? unless i get the ECU chipped?..sorry for the n00b Q’s lol
---
### Author:  [@RS13](https://forums.speedlife.net/u/RS13)
#### Post date: [May 17, 2007, 10:14am UTC](https://forums.speedlife.net/t/how-much-boost-can-i-safely-run-on-this-setup/146786/10 "2007-05-17T10:14:53Z")
With a T28 on your above set up you will max out your injectors at about 12-13 psi.
So i would not go above 10 without a tune. However you can usually find some basic “boost-uo” tunes off ebay that will allow you to safely run 14 PSI, on stock everything.
But yea don’t tune with a safc, buy enthalpy or even a power FC.
---
### Author:  [@240DRIFTz](https://forums.speedlife.net/u/240DRIFTz)
#### Post date: [May 17, 2007, 11:15am UTC](https://forums.speedlife.net/t/how-much-boost-can-i-safely-run-on-this-setup/146786/11 "2007-05-17T11:15:15Z")
Im running 10psi right now and im not too sure if my o2 sensor is working or not because my plug melted i just crimped the wires together and hoped for the best…i didnt really bother getting it fixed because allot of people are telling me they run theyre SR’s without an o2 sensor at all…which i found strange but its bin maybe almost 2 months and no problems…Is a greddy emanage any good for tuneing? i can pick one up at a fairly good price and kind of leaning towards that route
---
### Author:  [@Last\_Fuse](https://forums.speedlife.net/u/Last_Fuse)
#### Post date: [May 17, 2007, 12:09pm UTC](https://forums.speedlife.net/t/how-much-boost-can-i-safely-run-on-this-setup/146786/12 "2007-05-17T12:09:23Z")
> [@240DRIFTz](#):
>
> Im running 10psi right now and im not too sure if my o2 sensor is working or not because my plug melted i just crimped the wires together and hoped for the best…i didnt really bother getting it fixed because allot of people are telling me they run theyre SR’s without an o2 sensor at all…which i found strange but its bin maybe almost 2 months and no problems…Is a greddy emanage any good for tuneing? i can pick one up at a fairly good price and kind of leaning towards that route
If the SR ecu is anything like the KA ecu then if the O2 sensor’s signal is completely off (exceeds max or min levels) then it will ignore it and run a default fuel map. The ecu will up the the fuel values to keep things from pinging but drivable.
But for a Greddy eManage, dunno I’ve everything from the best to the worst.
---
### Author:  [@boost\_infested](https://forums.speedlife.net/u/boost_infested)
#### Post date: [May 17, 2007, 12:22pm UTC](https://forums.speedlife.net/t/how-much-boost-can-i-safely-run-on-this-setup/146786/13 "2007-05-17T12:22:01Z")
If the car is untuned u can blow it at any psi.