sjkelly

hey i have an 96 ls and i am planning on boosting it in the next month or so but here is what im going to be running...spoolin performance log mani, garret t3/t04e 60trim, tial 38mm wastegate, 2.5 downpipe to 3in exhaust, dsm 440 injectors, cca intercooler w 2.5 piping, greddy type rs bov, walbro 255 fuel pump, oil lines, new plugs and wires dyno tuned w neptune....my question is what psi will i need to make around 270-300whp, i was looking to run around 10-13 psi but i dont know how much it can handle bc this is my daily driver and i cant be blowing my engine just to make more power...thanks

AaronJ

I can see you making about 250-270 on 10-11 lbs of boost no problem. If it were me I would be happy with that amount of power, especially on a daily driver. That is what I am shooting for with my b16 on pretty much the same setup.

ek9vboi2

you gunna need to boost 13-16psi for 300whp! i would do 14psi and find a really good tuner. LS motors can handle it.

Thurman Merman

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ek9vboi2 &raquo;</TD></TR><TR><TD CLASS="quote">you gunna need to boost 13-16psi for 300whp! i would do 14psi and find a really good tuner. LS motors can handle it.</TD></TR></TABLE>

Motors can handle good amounts of power, pending the tune and tuner that is working on the car. If you honestly want to make 300whp, why not do a 3" downpipe with the 3" exhaust all the way back? I'd also take a look into some 550 injectors, no reason not to.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sjkelly &raquo;</TD></TR><TR><TD CLASS="quote">this is my daily driver and i cant be blowing my engine just to make more power</TD></TR></TABLE>

Pretty much answered your own question. If you have to rely on this setup and vehicle as your only means of transportation, why push it hard right off the bat?

blackeg

you'll need roughly 15 psi to hit 300 whp. my ls was making just about 12 hp/psi, and i made 240 on 10....(simple math evades me sometimes, but i think thats right).

i would get 550's though. 300whp is way borderline on 450s and stock pressure. i ran fatally lean at probably about 325-340whp on 450's and stock fuel pressure.


250whp in a street car is way fun, and can get you into trouble quicker than you'd expect

ek9vboi2

if ur worried about blowing the motor then stay at 10psi with the little boys and make 230-250whp and 200-230tq.

AaronJ

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackeg &raquo;</TD></TR><TR><TD CLASS="quote">250whp in a street car is way fun, and can get you into trouble quicker than you'd expect </TD></TR></TABLE>

Exactly! I would be so happy with that much power, and you will have a pretty damn good amount of torque to go along with it

ek9vboi2

b20 is more fun

250whp and 225tq highway runs are fun... and when 5th comes around its even more fun! b16/gsr.... 250-300hp and 180-200 tq isnt going to help u. lol

buttsneeze

as long as you got a good tuner, i'd say shoot for the most you can get on a conservative tune. you know you will probably eventually want more anyways, why not just do it now instead of going back later and having to get retuned for more boost?

and i'd go ahead and do the 3" dp for the same reason........

blackeg

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ek9vboi2 &raquo;</TD></TR><TR><TD CLASS="quote">b20 is more fun

250whp and 225tq highway runs are fun... and when 5th comes around its even more fun! b16/gsr.... 250-300hp and 180-200 tq isnt going to help u. lol</TD></TR></TABLE>


hahaha. i do have to say though, open downpipe lsvtec 13 psi was more fun than my 12 psi ls, but around town the ls was much nicer

sjkelly

i will look into the 3in dp and the 550 injectors but i just want as much power as i can get w out blowing my motor...i got a couple of anti-honda friends w quick cars so i need everything i can get lol

s2kdre

my ls was makin 230whp with a sc61 turbo, on a mustang dyno on 10psi.

SiAutoX

you will need more than 550 injectors to make 300 whp......when i shot for 300 i had to but 720's b/c i maxed out my RC 550's at like 12psi....I think it too me like 16psi on a stock LS to get 309, ofcourse I didnt leave it there i had it set at 12 psi and that gave me 271....still good power b/c an LS makes killer torque!