low dyno numbers

Green&GoldGT · Sep 6, 2006

The shop finished installing Crower Stage 2 cams and valvesprings and running it on the dyno after with no tune it only made 242hp/255tq with the A/F running rich at about 12. I'm going to get it tuned on Friday, but I was wondering if there could be a vacuum leak or if its just because a lack of tune. Will the tune bring the numbers up to at least 275hp and 300tq or is there some kind of mechanical problem?

mustangkid05 · Sep 6, 2006

wow that is low, yea it should help it alot

Red2000GT · Sep 6, 2006

Yes,those are kinda low but what were the test conditions? Hot/cold,humid or dry? What kind of dyno was it? MD or DynoJet ? I've never seen someone pick up 30hp by tuning a mild NA application,maybe 15 or 20 which would still be respectable for a few bolt ons,no headers and cams.

lvmustanggt · Sep 6, 2006

check my signature out. That number is way too low

four six · Sep 6, 2006

tune and then post #s

SaleenGT2001 · Sep 6, 2006

tune it first. then post numbers.

DropTopPony · Sep 6, 2006

who installed the cams and were they degreed?

rustangSC · Sep 6, 2006

yeah man thats way low. my car made 236hp on my dynojet with an intake and exhaust that i made and C&L/BBK 75mm combo

fastangboi · Sep 6, 2006

no tune is probably killing you. you can do a tune with a bone stock car and the number jump up quite a bit.

ADRENLN · Sep 6, 2006

i do think the tune will help out a bit. you dont have many supporting mods so dont expect to see the same numbers as guys that have l/t, pullies, mid pipes, plenums, and all the other bolt ons. i think you will be lucky to see 275rwhp but you should be close to that number.

that being said, i do think your #'s are a little low for sure but the tune should put you in the right spot for your mods.

shallowreef · Sep 7, 2006

Hell i'm doing close to that with my mods yeah deffiantely get the tune.

stangGT97 · Sep 7, 2006

DropTopPony said:
who installed the cams and were they degreed?

this is the issue that should be adressed here. Improper install w/ the cams not getting degreed properly can leave a lot of power on the table. Sure your car might run fine, but not up to its full potential. Who did the install?

csledd · Sep 7, 2006

stangGT97 said:
this is the issue that should be adressed here. Improper install w/ the cams not getting degreed properly can leave a lot of power on the table. Sure your car might run fine, but not up to its full potential. Who did the install?

agreed!

Green&GoldGT · Sep 7, 2006

The cams were installed at a shop that specializes in mostly 4.6 Mustangs. I'll post up new numbers tomorrow, but I don't know why the torque number is so low and why it was running rich after Stage 2 cams. Should I do a compression test, or is it possible a cylinder isn't firing? The car has 32k miles and I dont drive it hard all the time.

csledd · Sep 7, 2006

I was running a little bit rich after I did my cams, I was running especially rich at idle too

BooWFO · Sep 7, 2006

sounds a tad low.
But really after a tune let us know what the car runs cause that is all that really matters.

hotmustang331 · Sep 7, 2006

Hmm thats LOW...i serously doubt a tune will fix that, uless those #s were on a mustang dyno and your gettting tuned on a dyno jet.

My car went SUPER lean after my cams...I was idling @ 18-1 A/F lol. Tim couldnt even make a full pull on the first run...

RoadconeTuning · Sep 8, 2006

TUNE IT... a cam change completely screws w/ the fuel table you need.. untill its tuned your just limping around... slap some adjustable cam gears in and tune it... if not you dont tune it then quit bitching about low numbers.

Redsnake2 · Sep 9, 2006

yea My friend just put a turbo in his 4.6 with a 70mm throttle body and plenum and running 10psi w/o a tune he is making 300Hp to the rear wheels... That seems a lil low to me too. What do you guys think?
I though he would be in the 400hP range..

TGJ · Sep 9, 2006

Green&GoldGT said:
The shop finished installing Crower Stage 2 cams and valvesprings and running it on the dyno after with no tune it only made 242hp/255tq with the A/F running rich at about 12. I'm going to get it tuned on Friday, but I was wondering if there could be a vacuum leak or if its just because a lack of tune. Will the tune bring the numbers up to at least 275hp and 300tq or is there some kind of mechanical problem?

Below I quoted your signature, and I did this for a reason.

Green&GoldGT said:
Crower Stage 2 cams, SCT XCAL 2, Flowmasters, MAC O/R H pipe, MAC CAI, Steeda front Springs, Tri-Ax Shifter, FRPP 4.10s, Chin Spoiler, Silver Bullitts 17x9, 17x10.5, Nitto Drag Radials, Lakewood LCAs with action lift bars, Eibach rear drag springs w/ airbag, Alloy USA 28 spline axles, FRPP Subframes

If that dyno is a Mustang Dyno, your untuned numbers are not to bad. You don't really have a lot of mods right now to make some high HP numbers. All you have is an exhaust, a CAI and cams with a tune that is not optimized.

After your tune, if that is a mustang dyno, I would not expect you to make over 255 RWHP. You might make 275 on a DynoJet, but right now, I would rather know what dyno you used to get those numbers.

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