AsianIce25

iTrader: (2)

it only seems to be misfiring at idle though. how do i fix it?

BrentB@TEA

almost all aftermarket cams will misfire at idle.

verbs

mine too.

Those numbers seem very low. I don't think a dynojet is your solution. I'm assuming you are running LS6 "style" heads, not true LS6 heads correct? If they're real LS6 heads then I'd panic

jurisz28

iTrader: (6)

Maybe you already covered this, but did you wideband the car on the dyno?

92SilverSHO

iTrader: (3)

very low, something is up with that combo

AsianIce25

iTrader: (2)

yeah, i dont know whats wrong wither. i have a friend there with w2w ls1 ported heads and a bigger cam, 230+(not much bigger though), and he put down 404 on w2w's mustang dyno.

can you edit the knock tables so it stops throwing codes? i hate codes, it makes my car seem like a piece a **** with the check engine light always on. thats one of the main reasons i did the tune, so i dont have to look at that light anymore, its been on for lik 2 years, ever since i put the spray on and ruined a cat.

they did wideband the car, its running about 12.8:1 a/f and 28* timing at wot and 30* at 6800. i was told by kirk that that was the most timing he could do. so, im hoping this is just something to do with that mustang dyno. there are so many things you can do with those things, and maybe dan set it up wrong? id imagine that he knows what hes doing, but im hoping for higher numbers

i am going to livernois this sat for their open house, and im going to put this thing on the dynojet, and maybe their mustang dyno too. all im going to do before i go is change the oil. it just put a lil over 400 miles on it today since the cam, and im changing back to mobil one synthetic like i always use. i guess that prob give me a couple extra hp, but itll still be a good comparison.

how much power do you think low tire pressure will rob me? i think the wheels are low, like 20psi +/- 3 psi, cause i never filled em up after i went to the track last year in october, i just put the car away.

i have to admit that the car pulls hard, its like im in 2nd gear when im really in 3rd. i am going to go to milan (the track) soon, that will be a good jusdgement of how much power i am running, although i have a 300+pound stereo in the back that doesnt come out. one of the sponsors was saying he ran 11's on 350 mustang dyno hp, if i bust into the 11's, ill be happy even with that number. i doubt ill see 11's though. no traction. ill prob order some 315 nittos before i go though.

i keep on going through what it could possibly be, the problem that is. it could be the timing chain, but i know i set that up right, dot to dot, i checked it like 50 times and got other opinions too. plus if it was wrong, im sure id know it by now. so thats cool. timing set crappy, i know kirk set the timing at 28-30*, so thats cool. im running ngk tr6's gapped around .038, they seem fine. if i wasnt getting spark, it would run like ultra crap. true duals with bullet mufflers. edelbrock longtubes. everything should be cool. am i missing anything? what else should i check?

leeluther252

iTrader: (17)

Tire pressure is a big factor.. I gained 12rwhp when i aired my tires up..

amwellls1

good luck, can not wait to see the difference in the numbers between the 2 dynos

AsianIce25

iTrader: (2)

damn, 12 rwhp, i prob shouldnt add air before the dynojett this sat, cause i want to know the real difference. but i will go synthetic, i already bought it and crap. anyway, anything else? i was also thinking about going to synthetic moll one atf in the tranny. good idea?

leeluther252

iTrader: (17)

Make 2 pulls.. air the tires up and make another.. I did that at MTI and gaines 12 right then and there. It was on my 5th pull ... not that it matters

AsianIce25

iTrader: (2)

leeluther...i hope youre right, another 12 hp is a start. i think ill get a ported tb and maybe some harland sharp 1.7's, that shuld also help my numbers oiut. ill let you guys know, only a few more days till i get the new dyno numbers.

WHPLASH

iTrader: (22)

Do a Bo White t/b. Send him your t/b, less sensors and he'll have it back to you like 2-3 days later for $65.

ExceSSive

iTrader: (13)

Well I am sure you have heard this before...

1. Mustang dyno = lower dyno number
2. 4.10 gears = lower dyno number
3. low tire pressure= lower dyno number
4. 12.8 AF is that a good AFR for an N/A car? I know that with FI 11.5 or so is good, that just seems a little rich for N/A.

You have gotten some good advice in here, I wish you luck with what ever you try. Let us know the results.

AsianIce25

iTrader: (2)

agreed on all aspects except the af ratio. i think thats a good number thats safe, not like some who run over 13:1. im not sure if youre confused on this, but the higher the ratio the more lean youre running. 11.5 to 1 is real fat, but better safe than sorry. stoich being 14.7:1 under perfect conditions, which we dont have in the real world.

Phoenix 2001

You should go with the AFR 205cc heads...

PREDATOR-Z

11.5 is way too fat, I run 12.5 on nitrous and that is fat. no need to go from one extreem to the other. A rich motor will loose a lot of power. one time i went to 12.0 for a big shot and decided to do a NA run just to see and I lost .3 in the 1/4 or roughly ~25rwhp
Not to mention that over time carbon build up will foul everything from plugs to coating pistons, chambers, valves etc... making hot spots and giving you a lesson in KR from detonation and pre- ignition

SAM98WS6

Check it on another dyno. You know you should be ~400rwhp with your combo..or something is wrong..or your parts suck...its simple. We are all trying to help you out. Then you have to troubleshoot...
Tuning?
Compression test?
Leakdown test?
Degree cam?
The list goes on...

ninobrn99

iTrader: (8)

you should be putting down better numbers. there are alot of 224's putting down 393 or so cam only, then for you to add heads to the setup......410 should be easy to achieve. Maybe you could have a better tune??

AsianIce25

iTrader: (2)

OK, here's the deal. if you didnt read this, ttt. and so i just got back from livernois open house, it was cool. there was a lot of cars there. i got there around 11 or so and didnt leave till 5ish. so i put down 351.5 rwhp @ 6300 rpm and323.3 rwtq @ 5000rpm on Wheel 2 Wheel's Mustang Dyno. today, where it was prob 1- degrees warmer and more humid, i put down 405.3 rwhp and 375.4rwtq. I AM A LOT HAPPIER WITH THESE NUMBERS. i thought there might be something wrong with my car, but it would seem that all is cool. i think ill still get a bigger cam next winter and throw it in there. maybe a 233/239 or bigger. i just want to make it streetable power and obviously, i want it to help my et at the track. ill prob try to go to the track next weekend and try to get some numbers. so this means the following as far as conversions...

Conversions/losses:

Mustang Dyno # * 1.153=dynojet numbers
-or
dynojet # * .867=mustang dyno numbers

so i gained 53.8 hp and 52.1 tq just by going to a dynojet. the only differences were about 100 miles and i changed my oil back to mobil one 10w/30 over the 5w/30 regular oil i had in it before. so maybe the synthetic gave me a couple ponies. all in all, im glad i made it over 400, but its messed up how dynos could be so far off.

at the open house, they had a 99+viper, and it only put down 390. there was also a 03 supercharged mustang that made 440 on the dynojet. it had an exhaust and a couple other mods. so i feel good about my 405. i should have some track times in the near future, but not for at least another week.

AsianIce25

iTrader: (2)

forgot to post the pics of the dynosheets. here they are...