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Thread: Ahh, back from the dyno once again..interesting results.

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Posts: 11-19 of 19
2009-12-14 01:30:29
Take the car to track see what it does, if it's making good power it'll let ou know with the trap speed. I wouldn't really bother with dynos just for a couple of passes. Each time I go to one I rent it out for between an hour to an hour and a half to tune. That is where the big gains come.
2009-12-14 01:56:33
Originally Posted by BenFenner

Indeed. And after I had run my session, I asked one of my friends with an E30 (NC: M50 Swapped 91 318IS For Sale - e30tech.com Forums) to do his first two runs without then add the temp sensor right on his filter. The second the probe was in the engine bay, the temperature went from 47deg to 92deg, that was with the hood still "poped" leaving a 3inch gap between the car and the hood and the bay temps were still that hot almost instantly.

His first two runs he put down 147whp. With the temperature sensor correctly in place: 158whp.

After that the dyno operator said not to use it anymore because they never use it and wanted to maintain consistency. Many around me didn't understand why it mattered...it was frustrating to say the least but i explained to them and tried to make them understand it wasn't just "inflating the numbers" but making them more accurate and helping to simulate what the motor makes on the street....ugh. Not to mention if the dyno is reading %13 lower, that is nearly %8 of the reason.

Originally Posted by Autech
Itss odd that with the new fly, asp header and intake tubing you have no excessive gain
I know dyno runs might not be cheap for you, but if you get a chance throw on the stock rubber intake? These are good for 200whp.
Whats the torque curve like with the new mods compared to old mods?

True indeed, and I am convinced my first dyno a year ago was also largely false due to a poorly calibrated dyno. I had talked with knowledgeable people who had suggested to try replacing the few things that "might" be holding the motor back. That's what I did when I converted to n60maf, 3inch intake piping, and removed the oem cat. I posted both graphs, so you can check out the torque curves. I will state, after adding the flywheel and asp header the torque really felt allot more stout, however it is clear i am lean from 2900 to 4000, which seems to reflect a lower torque output in that range. This might not have been lean before as i had a different header and tune on it with the ssac.

Originally Posted by macakin
Great, maybe your old Dyno had some problems all this time

Yep. It is very hard to compare the two I'm sure many realize, but it is neat non-the-less.

Originally Posted by Topdog781
I don't understand shouldn't dudeman be making more power for those mods listed? Hey dudeman did you get the car tuned yet?

Well I really would like to see over 200whp out of this motor. That said I really do enjoy driving it, and it is allot of fun. The other day I was messing around on the dragstrip with my buddy in a supercharged grand am, he has run 13.88 and I pulled away from him at moderate pace.

And no, no tune yet. I am working on that as fast as I can, hopefully after Christmas break . I now have a place to go and someone has even offered to help me out so it is very close to reality for me. I cannot wait to see what I can do!!

Originally Posted by 1sentra-se-r
Interesting cause i made 194whp with similar mods on a dyno dynamic without my 4-1 header and it reads really close to the local dynojet. I think it would have been better to compare it on the same dyno you use before but its just me. Numbers seem low but it's untuned so with more tuning you shoud have some hp to gain.

True, although I could not pass up $10 for three pulls and free lunch! I also am never going to be back up north again with the car, so mine as well start somewhere down here right?

Originally Posted by SUNNYboi
Yeah man something is up with your car. Sould be in the 190 with that build. Maybe the DE MAF is the bottle neck in the system? Or maybe your alttitude?

If you add the %13 and if I had put in the temperature sensor the motor is over 190, however I still don't like the results too much that seems like a stretch. I hate the "what if" involved with dyno numbers. That's why i need to take it to the track...

Originally Posted by lynchfourtwenty
his "current setup" states he's using a n60 maf.
numbers are kind of low, but theres room for improvement, im sure you will be hittin the ol magical 200whp soon enough..
i got 150whp 129wtq on a mustang dyno.. an as i everyone told me, dont feel bad.. dynos are for tuning..
like i said tho im sure you will be rockin 200whp soon, i've watched your videos an your car seems pretty mean

Thanks allot for the encouragement bud! Yeah, it is a long road, and I'm hoping with tuning I can get some reliable numbers out. I am confident the motor has it in it. You will know when I break 100hp/liter! And I appreciate the compliments on the videos even though they are tacky as hell .

Originally Posted by SUNNYboi
Ture about dynos. Best why to find HP is trap speed

You said it.

2009-12-16 00:00:40
Both dyno charts posted if anyone is interested...

2009-12-16 00:26:14
You know, you've got a similar thing going on that Dan and I run into. You're making no torque at all, but you're holding it until very high rpm which gives you that high power number. This is actually how I prefer my torque curve to behave, but overall you're making less than stock torque. We know that can't be right. There's no way you're making 117 WTQ. You're making at least 130 and could easily be making more if I had my guess. This is similar to what your 13% figure gives you. I don't doubt you're making upwards of 188 WHP like you said. That sounds about right to me.

Sweet torque curve regardless. =D
2009-12-16 01:42:54
I've wondered about your #s all along. IMO you may be looking at a weak motor but the only way to know is the 1320 dyno. That will tell you a lot.
2009-12-16 02:22:29
FK n/a dyno numbers... they don't mean a damn thing all they do is dishearten you

The track is the only proof... don't fret homie just keep having fun.
2009-12-16 02:37:50
i agree, na dyno numbers seem to be a joke, atleast for sr20's lol if you get a good number, people cry if you get a crappy number no one even cares..

it all comes down to the 1/4 mile..

havin a wrx driver makin excuses for why you beat him is priceless..
2009-12-16 02:52:00
Originally Posted by lynchfourtwenty

havin a wrx driver makin excuses for why you beat him is priceless..

Tell me about it
2009-12-16 02:56:21
he was like.. what u got in that thing an sr20? i said yep with V TAK hahahahhahahha
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