Only 250hp??

[slvrDsm]

hey guys.. i reasearched this thread and found somewhat of an answer. im just curious to see if this sounds right. i have a 97 gst. and went to the dyno to get it tuned yesterday with my new dsmlink. which by the way is the greatest thing ever alive . well i dynoed only 250hp and 243tq at about 19 to 20 psi on pump gas. here are my mods

evo 3 big 16g
evo 3 exhaust manifold ported
evo 3 o2 housing
apex turbo back(resignator replaced with a pipe)
injen intake
Greddy XL FMIC kit with greddy type s BOV
Fp2 cams with crower valve springs and retainers.
fidanza adjustible cam gears set to: exhaust cam retarded 3 drgrees and intake 1 degree advanced

Its was done on a mustang dyno... just doesnt seem right to me... if anyone would mind letting me know what you think i would appreciate it.. thanks guys

Eric

 

[interex]

You're not feeding the engine anymore fuel? I don't see injectors on your list... Might help if you get some bigger injectors.

I believe stock the injectors are running more than 90% so to me that would make a little bit of sense.

 

[1991autoGSX]

what size injectors are you running?? along with fuel pump??? what is your air/ratio tuned at when you ran it on the dyno??? i've hear that Mustang Dyno's are around 12% inaccurate in comparison with a Dyno jet chassis dyno or Dyna Packs....please correct if wrong....

 

[Dsmx17]

says 680's in his profile, but nothing of a pump, your right about the dynos. OP: your torque looks a little low for 20psi, obviously so does your power, unless you have a auto, then its pretty much dead on.

 

[fwdmaster]

I think your car is running very lean without proper injectors,that's why you dynoed so low

 

[LTUDSM]

well, when i had a 550cc injectors,full 2.5 turboback exhaust,GM Maf setup,small 16g turbo,190 fuel pump, i made 278 whp and 278 lbs/ft of torque and i my air fuel ratio was set on 12.5 at WOT....

 

[crimsondragon]

Holy...12.5? Isn't it recommended to run a 11:1 ratio?

 

[LTUDSM]

it is,but Our favor Shop "TurboTrix" did a tune...which i wan't happy about it.... I saw how they were adjusting a biss ,without shutting the car off and taking off the neg bat cable ,so you can imagine,how they are tuning cars.... (((

 

[JayRolla]

HP numbers are a little low but not much. What timing are you seeing and how much knock? Also what was the afr? If you dont have an aftermarket fuel pump I would think you are running out of fuel and running lean. Surprised a shop tuned you at that boost level without a fuel pump.

 

[slvrDsm]

sorry guys.. yes i have 680s with a walbro 255. im new to dsmlink an how it works. just getting used to it.. my af ratio was 11.5 on the dyno.. an i was gettin just a little knock up high just after 6000 rpm.. but took a lil timing out and he said he was not seeing anymore knock. he had the timing sliders like all the way down in the high rpm's.. not sure if its to much or what. and i also never inverted my CAS. so would that make any difference in tunning?? all help is very appreciated guys.. thanks

Eric

 

[BoredDSM]

mustang dyno's read a lot lower than normal. We dynoed my friends 240sx with an ls1 swap and he only read out 320whp. When we went on a dynojet in a different town we dynoed at 416whp. So its a fairly large difference.

 

[OverboostGSX]

Just make sure that for tuning purposes, you pick one dyno and stay with it to finalize your tune. Like the others have posted, all dynos read differently, even two different mustang models, so the numbers do not matter as much as long as you are not trying to be a "dyno queen."

 

[slvrDsm]

Yes. i am planning on staying with that same dyno.. just think we missed somethin in the tune. like i said in the previous post.. if you dont invert the CAS will that have a dramatic affect on the tune.?? my car jus feels like its choking up top end.. it never felt like that before the tune... idk guys.. i was faster with stock injectors at 15psi... it pulled way harder. if anyone has a tip or suggestion i would love to hear it.. just want this thing to have that pull it did before.. thanks

 

[snowborder714]

Post up a log. It will say more than you can.

 

[JayRolla]

What timing is it hitting. Sounds like they may have pulled a little too much.

 

[slipstream808]

Wait wait wait.

The CAS should be inverted. It should be dark when you go to that menu. That means the button is "pushed in". But still. The car would run like CRAP if not at all without it selected.

Post a log. Do a boost leak test. Ya know, the usual stuff.

 

[Doubt it runs]

dynojet, mustang dyno or another dyno brand?

fwd hp or awd hp?

if thats dynojet awd hp id say thats pretty close to right.

 

[Detective Coating]

Wait wait wait.

The CAS should be inverted. It should be dark when you go to that menu. That means the button is "pushed in". But still. The car would run like CRAP if not at all without it selected.

Post a log. Do a boost leak test. Ya know, the usual stuff.

It really doesn't make that much of a difference not to have it inverted. I know a few people that don't have it inverted and have no problems whatsoever. Definitely post a log of your dyno pulls.

 

[JayRolla]

dynojet, mustang dyno or another dyno brand?

fwd hp or awd hp?

if thats dynojet awd hp id say thats pretty close to right.

Actually dynojets read higher than mustang and dynometers. He ran on a mustang so if he added 15% that would be about what a dynojet would run.

 

[slipstream808]

It really doesn't make that much of a difference not to have it inverted. I know a few people that don't have it inverted and have no problems whatsoever. Definitely post a log of your dyno pulls.

Well, mine wont run without it. A '95 or '96 shouldn't have problems but any '97 and up should need it. If not then hey as long as its running.

 

[slvrDsm]

yes. im thinkin the guy pulled way to much timing out of it... i need to post the log.. how do i post a log?? .. sorry for being new to this. but the only real answers are on here. and i been going back an fourth to the dsmlink forums as well.. ok.. and the guy that tuned it didnt really adjust any of the air meter sliders or anything just fuel and timing. was he missing a step?? im planning on takin it back tommorrow to get it re tuned. i was not happy with the results.. i jus did i 2nd and 3rd gear pull.. went over it an found 0.4 knocks high end highest was 0.7. is that really bad or just a little bad?? thanks alot guys.. your advice is great..

Eric

 

[snowborder714]

Click Go Advanced then click the Upload/Edit Photos button below the message box you type in. Then find your .dat file by clicking the Browse button and upload it.

.4-.7 counts isn't bad at all. I personally wouldn't worry about them (but I'd try and get rid of them since I'm picky).

 

[force_feed]

Do you have an AFPR? If not the the 680cc Injectors and 255 fuel pump aren't doing anything more than the stock setup. You could very well be running out of fuel.

 

[19BLACKGST98]

I ran 880 injectors with a wally 255 with no FPR (I have one now though) and put down over 400whp (@21 psi) with no problems.

But anyways the guys at FP put alot of time into making/testing the FP2 cams. I would just leave them at zero, any changing on them will make them less efficiant. If you wanted to do anything I would just change the exhaust retard enough to get that nice exhaust sound (i dont care about sound so I wouldnt do it personally)

just my .02

 

[BoostFrenzy]

What timing is it hitting. Sounds like they may have pulled a little too much.

I completely agree. One you post a log up, we can look further into it. But, what I'm thinking is that they pulled too much out of it, and then didn't add it back on the top end once the 16g starts to get out of breath.

A local here did just about 300awd hp on a dynapack on a small16g and pump 91 at 20psi. And was going to get more out of it but his clutch failed from 310+ft lbs of tq (same clutch as you and me). Didn't even have cams in it. So I'd say there is a LOT more to be had with your car. You have cams and less power loss being a FWD and the better EvoIII 16g.

Do you have a WB or were you just using the dyno's WB?