marine02ss

iTrader: (3)

I went yesterday to dyno tune my new 408 at HPE.First of all, how do u tune with no air/fuel metering device,Chuck at HPE said he didnt need one.I know he was looking at the stft and ltft on the tech 2 data,but I dont buy that at all.Most shops dyno #s, I've seen here show air/fuel mixture.
My car is an 02' SS LME 408ci,afr 205's,248/254 609/613 114LSA,fast 90/90,HLT,A4,3500TCI,3.23.I only got 430hp at 6500rpm,380TQ at 5600 WTF!!!This was done with converter unlocked,Im still confused as to what happen Is this normal?,it was dynoed with the mustang dynometer,long story short Im dissapointed,timing was at 30degrees with no knock.

BLKWS6

AFR 205's on a 408ci? seems awful small port size for that cube motor....

marine02ss

iTrader: (3)

I know Tony at AFR told me I should only be down 5-15 hpover 225's,still those are low #'s I think,the car looked a little rich at high rpms it was smoking black and it smell alot like gas ,Im gonna have to retuned or something,Any good tuners out there,I know that motor has more,but with no air/fuel reading how do u know?It has to get better,**** I should've stayed with 346!

gtodoug

iTrader: (1)

Wow...........something is definatley wrong there. You got away with 30* of timing and no KR? Now the numbers are unlocked and it is a mustang dyno so, you might have been like 460ish on a dynojet with the verter locked but still seems a little light. What compresison ratio is the motor setup with? Standard 205's unmilled? Unported or ported FAST? A little more info.

dougie

cantdrv65

iTrader: (3)

Not enough head for a 408....IMHO You've defintely got some issues with that setup. I would also get a reading with a wideband.

marine02ss

iTrader: (3)

The head are stock afr205s,unported 90/90,compression speced out at 11.25 by LME.I also thought 30 degeees of timing was alot,but who knows I know the ported fast will help me a bit,but cmon 430 is low.I think this thing is rich cause u could see it thru the exhaust,Im going to have to have a retuned with a "AIR/FUEL METER" to see where it is at.

Chuck@

iTrader: (1)

30 degree's of timing above 6800, 28 degree's of timing at peak power, 24 degree's at peak torque. Car was just barely detonating at high rpm during one of the pulls which explains the black smoke. Pretty good power through Jet hots and a 408 with 205's and the converter unlocked on the Mustang dyno.

Considering I gave you all a group price on the tuning yesterday, I feel like the results you achieved were great.

Chuck

offaxis

iTrader: (19)

Those are pretty good numbers on a mustang dyno

SideStep

You do not... at least not with accuracy. I do not know what kind of $$$ deal you got but I would be very interested in the new results from another tuning session with a WB...

marine02ss

iTrader: (3)

Believe Chuck not trying to bash or anything,all my friends were totally happy,the CETA car drived way better and pulls harder,he was happy,the blue camaro he was also happy I just need to do that hole in the Tb u ask him to do,but we were all confused on how there was no air fuel meter,Do u think we could have squuezed more out of it if we had leaned out little bit,just asking for suggestions,my car does idle better.I was driving today and noticed a couple of times my idle haunted bad then shut off,might also enlarge that hole little bit.Im going to the track tonight see what it will do in et streets,tomorrow Im dynoing at my friends shop with the dynojet.Im just totaly cofused thoght wuld have had more in it,cause I've have seen it done here

Order 66

A4 on a mustang dyno, they aint bad numbers. I only seen a very few 402/408 over 500rwhp.

marine02ss

iTrader: (3)

About how much am I down vs the dynojet,I know this thing is rich,Ive seen gains on other cars as much as 25-30rwhp from 11.1afr to 13.5afr,car does feel good there but I know there more to it.

prostock_bigblock

iTrader: (11)

black01_WS6

iTrader: (13)

something isn't right, I put down almost the exact same numbers with my stock 346ci and stock heads. though I am a m6 and your an auto, you should be putting down better numbers. how does she drive though, dyno numbers don't really matter, its how she drives that does.

marine02ss

iTrader: (3)

It drives ok,typicall of big cam,I was going 80mph this afternoon,inthird gear hammered it car went sideways let off,Im going to the track in the next hour or so,does anybody know how much is the average diffrence between the mustang dyno and dyno jet

JMBLOWNWS6

iTrader: (17)

HPE did my buddies tune on his 402 and we redid it with the wideband and picked up almost 55 RWHP. Since I factored in the difference from the dynojet to the mustang dyno. So I figured we gained almost 75 to 80 on the dynojet.

black01_WS6

iTrader: (13)

I did some dyno pulls a while back and my car put down 386rwhp on a mustang dyno and put down 401 on the dynojet before tuning. it all depends on the software they have. you can make a mustang dyno have close to the same power as a dynojet. get a A/F and then go back and do some more tuning. if you ever upgrade to the 225afr's hit me up im in the market for some good heads.

offaxis

iTrader: (19)

Its hard to compare a unlocked a4 to a m6 car as there could be a 50 hp difference depending on how efficient the converter is. Also he was dynoed on a mustang dyno which also reads lower than a dynojet.

marine02ss

iTrader: (3)

You must be fucken shitting me,maybe u can help me out?I just know this little mouse has more in it,and I aint giving up,all the money spent,I want good results

Louie83

iTrader: (3)

380 TQ, am I the only one who can see that? Look at the size of the cam he is running.

There is obviously something wrong here. A 347 with your mods would be putting down bigger numbers than this. You need to take it to the shop and have everything looked at. Good luck finding the problem, I'm sure you'll get to the bottom of this.