96redcamaro

iTrader: (1)

(update and new numbers on page 3, post 52)

(new dyno graphs on page 4)

I think that is pretty crappy HP numbers for all of the mods that i have done.

Engine:
370 Iron block
317 heads ported and polished (dont have flow numbers)
EPP Blower Cam (Update.. Cam is pretty small, prolly a little bigger than a Z06 cam)
Aster Bracket
8.65 Crank Pulley
3.7 blower pulley
Fast 92mm intake
NW 92mm TB
60lb injectors
Pacesetter 1 3/4 headers
SLP Catback
Snow Stage 2 100% meth, dual nozzle (dont know the flow rate, shop installed it)
dual 4.5 ATI Intercoolers


Trans:
T56
Centerforce Clutch

Rearend:
Stock 10 bolt

The tuner kept telling me that the cam is to small and that is why it is not making good number. I dont believe him since i have seen people make in the 600's and even 700 with that same cam.

I asked the tuner to make a pull with the cutout open, but he didn't. I dont know how much of a difference it would have made anyways.

I noticed that the AFR goes REALLY rich on the top end. Do you think that could be killing my numbers?

I wish i knew what the timing was. But i wont know for a couple of days, until i can get to the car with my laptop and look at it.

Realcanuk

You need a new tuner. You don't mention compression but if it is within reason, these engines like to run much leaner than that at WOT. Mine likes 11.5 with 12 lbs of boost.

geoff17

I have learned something over the last few years, NEVER worry or pay any attention to a dyno number. Bring your car to the track and see if your on par with other similar setups. When I first finished my car it was tuned on the street and ran great for 11psi and went 6.7@104mph when it finally went on the dyno when I wanted to turn the boost up I asked the tuner to make a baseline run to see where it was at before we turned the boost up, guess what it made?? 480 RWHP that's it, but guess what it went 6.7@104 with that power, we then upped the boost to 15psi and only saw 585rwhp and I was a little worried again with that low number compared to most people on that boost with similar mods to me making more, took it back to the track and it went 6.3@110 and 9.86@140. Moral of the story, the dyno is just there for tuning, bring the car to the track if you want to see what kind of power its making.

Realcanuk

I agree that the dyno is for tuning and the number is not that important, but running 9.5 AFR on a build like that is just wrong.

96redcamaro

iTrader: (1)

the compression should be around 9.1:1. Makes me wonder if he also didn't put any timing into it also.

I calculated the Impeller RPM and with my pulley setup the impeller will be maxed out at 6,400 engine RPM. Why would it stop gaining HP way before that? Do you think it could be the exhaust setup?

JMRO

iTrader: (1)

Well Piddle! I would think that it would be quite a bit higher for your set up even for it being on a mustang dyno. While I agree with what they are saying about the dyno numbers (your other camaro is a testiment to that) something does not seem kosher.

ramairetransam

iTrader: (18)

with those mods i figured you for at least 600s , also i noticed you dont have meth . what intercooler setup and are you on a maf or sd tune ?

96redcamaro

iTrader: (1)

Sorry i forgot to add the meth and intercoolers to the list. I added them now.

Snow stage 2 dual nozzle 100% meth
and Dual 4.5 ATI intercoolers

truckdoug

iTrader: (25)

why so rich from 4000+ ?

i'd be interested to see a log of the run.

ramairetransam

iTrader: (18)

yeah i dont see why your so low , its not your equipment holding you back its in the tune . Do you have any other options for reputable tuners around you .

96redcamaro

iTrader: (1)

It is a SD tune. Lots of options. I might just have to take it somewhere else, and see what another tuner can do.

96redcamaro

iTrader: (1)

I would speculate that this setup should atleast see around 630+HP. But that is a lot of HP to make up in just a tune. or maybe not???

JMRO

iTrader: (1)

I think it is very possible to get your numbers close with a good tune in it. Your car has the right hardware, and by the dyno sheets the software is just not set up right. Did i see that it was at 12psi?

JMRO

iTrader: (1)

sorry, just saw that in the post title...

99z28383

iTrader: (1)

Run from that shop and go to another tuner. That is ridiculously rich.

geoff17

I do agree with that. You are def way too rich with a 9.5 AFR. I'm just saying at the end of the day I wouldn't pay too much attention to the dyno numbers, but you def need to have the fueling issues fixed up.

denmah

iTrader: (2)

i tuned a d1 powered 408 with around the same size cam and ended up with 510 ish nice and safe.

i agree with see what it traps

i used to second guess myself all the time here on LS1 tech since people "easily" made 200 more hp than i did on the regular but they trapped the same as me...

also a long time ago my friend coined a phrase "dont race dynos"

jay_rich

iTrader: (8)

Id look into another tuner that AFR is terrible. You will be amazed at the power it will pickup from leaning that out. I wonder how your oil smells lol

Jay

Troy5061

iTrader: (19)

A Mustang dyno will read on average about 10% lower than a dynojet which is what most people use on here. My car cam/headers 6spd put 355hp down on a mustang dyno, built a 383 with nice heads and a bigger cam and fast intake it put down 356hp through a stalled auto. I tell ya that's the strongest 1 pony ever, I gained 8 mph in the 1/8th mile lol.

Mike 02T/A

iTrader: (28)

Find another tuner! Those #s are bad for a basically stock ls1, then I noticed the 370 part of the post. You should easily be mid 600's I'd say.