streetzlegend

iTrader: (8)

Ok so I just decided to finally dyno for yall to stop whining LOL, j/k. Anyway I went on 11psi however on dyno it showed as 10psi since theres less load (Dynojet). For those that dont know, built block 3.5, HX40 rear mount, Water/Meth injection, and stock timing.

The car has been misfiring for a few weeks, I have not been able to figure it out till today, this morning before dyno i regapped plugs down to .030 from 035, and still missing. Still dyno'ed, and result was 380whp 366wtq, STD. Not happy but considering the crazy missing, auto, and only 10psi on a 8.8:1 compression, I dont think its too bad.

So I just went to autozone, alternator is putting out only 35amp, supposed to be 125+, that can def explain the misfire.


I have it as MPH because in RPM the curve is all over the place cuz of the missing.

TurboA32

iTrader: (36)

you have stock redline? and its really good for 10-11psi on 8.8:1 pistons. and why did you go .030 i think that gap was too close .035 is prob much better

streetzlegend

iTrader: (8)

Like mentioned, it was missing alot, so i lowered the gap.

TurboA32

iTrader: (36)

thats a 3rd gear pull? and whats your redline?

streetzlegend

iTrader: (8)

I have stock redline

TurboA32

iTrader: (36)

so do you think your alternator is on its way out?

bigleman

iTrader: (4)

"alternator is putting out only 35amp, supposed to be 125+"

You dont read much, huh?

TurboA32

iTrader: (36)

oh so that means yes lol

t6378tp

iTrader: (69)

Agreed 380fwhp is not bad for 10psi on a 8:8-1 motor not get the alt fix and turn the boost up to atleast 15psi where it should be

10psi is for stock motors with stock cr

streetzlegend

iTrader: (8)

Yeah, thats the plan, I just changed the alty but the damn sun wore me the *** out. dont feel like even driving lol. prob tomorrow ill test 3rd gear and see if it misses.

ajcool2

iTrader: (43)

Nice. What was your highest dyno before this one?

streetzlegend

iTrader: (8)

Well we all know I almost never dyno, so my last dyno was with the 3.0 and leaky head gasket, about two years ago. 312whp at 10psi. With this built motor, its the first time I dyno.

t6378tp

iTrader: (69)

So whats next another trip to the dyno or is it off to the track, personally it would bug me to death being so close to 400hp not to go back

btw do you have slicks or dr's

streetzlegend

iTrader: (8)

I'm going back with no muffler, and 17psi. Taking muffler off alone raises boost like 3psi. I got full slicks

accordingtou

iTrader: (41)

GREAT

Child_uv_KoRn

iTrader: (7)

What kind of muffler is that

akurtzer57

iTrader: (4)

The muffler restricts the exhaust quite a bit. Alot of people see small gains in psi like that when going to a larger exhaust for example 2.5" to 3"

QT1 5MT AE

iTrader: (6)

the graph looks like a SC, is that the case?

streetzlegend

iTrader: (8)

God no lol. It does look like SC. but the turbo is pretty big so it takes long to spool up, hence the late torque curve.

streetzlegend

iTrader: (8)

I just floored it on my way home and i didnt feel any misfires, now with new alternator!!! going to give it a few more days to make sure it really isnt misssing.

its a 3" dynomax superturbo.

Conrad283

iTrader: (2)

I call

streetzlegend

iTrader: (8)

BS on what son!!!

Conrad283

iTrader: (2)

On having a car

QT1 5MT AE

iTrader: (6)

oh i see... just saw your other post with plans to go to 17 pounds so it shouldnt've even been a question. LOL

krazy6

iTrader: (5)

I'd say 380whp is pretty good power for 10lbs.
Anything done to the auto to hold the power?

Flava_24/7

iTrader: (46)

Nice numbers, easily looks like a 400whp setup you got there.

SonicDust187

iTrader: (11)

Congrats!!!!!!!!!!

streetzlegend

iTrader: (8)

Thanx guys, I really think the misfire is gone, after more driving today i should be able to know if its good or not, if it is, then more boost. I wanna get to 500 without going too much over. Krazy6, the auto is basically stock with a huge 40000 GVW cooler, drop resistor, and transgo shiftkit.

krazy6

iTrader: (5)

Damn man, that is badass.
Think that is all that Jime has as well.

When I build up my project 4th gen it will have an auto.

Crusher103

iTrader: (10)

decent numbers atleast, in for dyno with no misses......

1swtmax

Nice work streetz. In for numbers when you decide to go to 15 psi.

maxina97

iTrader: (12)

Nice man , suscribed until the next dyno.

streetzlegend

iTrader: (8)

Thanx guys, hopefully ill go to the next dyno soon. I have some motivation for now. I havent driven the car with the new alternator enough to know if the missing is gone or not, if its still there, then its going to be a while to figure it out since iv checked everything. if its gone then up the boost and hopefully dyno

timmay5835

iTrader: (14)

I DEMAND VIDEOS!! nice numbers man, what are you tuning with?

streetzlegend

iTrader: (8)

I was going to take vid at the dyno, but whats the fun in watching a car standing still? lol

I am tuning with EU and J&S

NiZMo1o1

iTrader: (45)

so was it just the alty going bad or it being old ? you could have a draw somewhere if the new alty is doing the same ( or if I miss reading somewhere the issue is fixed)

anyways decent #s but im sure more power is untapped until the next dyno !

streetzlegend

iTrader: (8)

I hope nothing is causing a draw like that. I havent verified if the issues is fixed. Havent touched the car the whole day.

accordingtou

iTrader: (41)

what size is your intercooler & charge piping? Im curious to know what they might "max out" @

streetzlegend

iTrader: (8)

2" charge piping to the IC, 2.5" inlets on the IC. and out the IC goes to 3" into the motor. IC is i think 23" wide, 28x9x2.75

Nealoc187

iTrader: (23)

where is your boost level referenced from?