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CSRT4 407

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Discussion starter · #1 ·
Im having a hard time tunning this thing. ill do one pull and be rich then do another and be lean as F***. im clamped at 3.2 does anyone know what i should be around with the mods in my sig
 
you should use a multi meter to check your voltage. you need to see what the 3rd number is.(example 3.25v) because 3.20 and 3.29 is a big difference.
every car is different and it depends on the amount of boost your running for the voltage. so if i were you i would start at 3.45v and set your boost were you want it. then slowly drop the voltage. watch your lean spike, i would stay below 13.0 for the spike. you will get a spike in st knock(keep it under 1.0) when you get the lean spike, then the knock should drop to 0.0
 
Discussion starter · #4 ·
ok i will do that. i do have one question tho. if im clamped so high and the computer is seeing more than ms1 boost levels wont it pull throttle? b4 my boost was clamped at 14.8 and i was getting 87 throttle but i was running lean. im asuming because my boost was to high. im hooking up my manual boost contorller today.
 
Set your clamp too the voltage right where it gives you 88% throttle. Use your scan gauge unclamped to find this voltage out. Once you got it slowly start upping the boost and watching A/F. Unlike most guys on here once my clamp was set 3.2v I left it alone and used the WG only to adjust. fyi

With your bigger injectors you may have to clamp lower 3.1/3.0 range. See what your car likes.
 
Set your clamp too the voltage right where it gives you 88% throttle. Use your scan gauge unclamped to find this voltage out. Once you got it slowly start upping the boost and watching A/F. Unlike most guys on here once my clamp was set 3.2v I left it alone and used the WG only to adjust. fyi

With your bigger injectors you may have to clamp lower 3.1/3.0 range. See what your car likes.
you want to use a multi-meter to check your volts, you need to see the 2nd number after the decimal so you can fine tune.

his injectors are not much bigger than stock if their the nsrt injectors.
 
ok i will do that. i do have one question tho. if im clamped so high and the computer is seeing more than ms1 boost levels wont it pull throttle? b4 my boost was clamped at 14.8 and i was getting 87 throttle but i was running lean. im asuming because my boost was to high. im hooking up my manual boost contorller today.
yes,but im just giving you a safe starting point.
 
Discussion starter · #8 ·
ok ive been trying to get this thing dialed in all day. this is were im at


Clamped: 3.4
AFR: 11.5-12.3
Clamped boost: 16.5
87% throttle

Actual boost:

2nd spike 18 hold 15
3rd spike 19 hold 16
4th spike 21 hold 18-19. (one pull i spiked at 21 and hit 24 and held...afrs were still safe) whats up with that lol

I have 2 codes. p0107 map low and p0420... i have ms1 and completely straight pipe

i think im gunna leave it how im set. does anyone know what the deal is with those 2 codes? and is that normal to have the boost jump around that much?
 
you want to use a multi-meter to check your volts, you need to see the 2nd number after the decimal so you can fine tune.

his injectors are not much bigger than stock if their the nsrt injectors.
577/575 are way bigger than stock Bro? stock Caliber 450-470cc NSRT1's 499cc
 
577/575 are way bigger than stock Bro? stock Caliber 450-470cc NSRT1's 499cc
those are at different fuel pressures bro. someone posted a chart up of the differences, im pretty sure r/t 575's dump a bit more fuel at our fuel pressure than nsrt s1 injectors.
 
your boost shouldnt jump around like that. are you doing you pulls from the same rpm every time?

if you gonna be running over 20-21 psi you really need meth or race gas.
turn the boost down just a little and lower the voltage a little, more boost doesnt mean more power. lots of power come from advancing timing.

this 21 then rising to 24 is called boost creep, not really a good thing.
 
Discussion starter · #15 ·
your boost shouldnt jump around like that. are you doing you pulls from the same rpm every time?

if you gonna be running over 20-21 psi you really need meth or race gas.
turn the boost down just a little and lower the voltage a little, more boost doesnt mean more power. lots of power come from advancing timing.

this 21 then rising to 24 is called boost creep, not really a good thing.
Ok I will do that. It feels strong tho. Ill have to see. Ill post bak up with results
 
whats your st knock look like?
 
blips of .3 and an occasional .7

i turnd the boost down and it doesnt feel as strong. idk why i cant hit 19-20 in 2nd it just wont go but in 4th it pulls like a train
drop the voltage a little more. you have to mess with it a decent amount to get it perfect.
 
Discussion starter · #19 ·
well i went out to the races tonight and it went really well actually

My buddies that i ran do 12.5 and 12.8 in the 1/4

i pulled about a half a car on each of them from a 40 roll..

seems like its running good but idk if i ready to keep ****in with it
 
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