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12-06-2008, 09:40 PM | #476 |
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My dyno from RR yesterday.
Stage 2. Great service from Pat.
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12-07-2008, 03:20 PM | #477 |
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i want your torque curve.
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12-07-2008, 11:08 PM | #478 |
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Mmmm...why doesn't Volvo have tunable software. I want to go back to RR for a tune but Volvo don't let me! C63AMG....here I come.
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12-11-2008, 10:11 PM | #479 | |
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Quote:
http://www.burgertuning.com/ |
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12-11-2008, 10:47 PM | #480 |
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12-11-2008, 11:43 PM | #481 |
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12-12-2008, 12:24 AM | #482 |
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^ah i see. still, u should've waited lol.
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12-12-2008, 12:54 AM | #483 |
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12-12-2008, 04:52 PM | #484 |
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I've had a bunch of stock, and tuned, 335s on the dyno.
Lets just say that what is out there in the aftermarket is about as refined/developed as the "Shiv RS turbo kit" |
12-13-2008, 12:06 AM | #485 |
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Got a question....
Posting for a friend of mine as well. We did another dyno pull on Mustang dyno at Racing Greed and this is the result: 294whp and 299wtq The two dynos are done with exactly same set up. Mustand dyno was done on a much cooler condition and in 3rd gear but Dyno Dynamic was in 4th gear. They did another 4th gear pull on Mustang Dyno but the number didn't have much difference. Anyone knows what happened? thanks Last edited by j-velocity; 12-13-2008 at 06:14 PM. |
12-13-2008, 02:54 AM | #486 | |
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Quote:
A stock STi ~ 210whp on Dyno Dynamics A stock STi ~ 230whp on Mustang Dyno How come this car have 137whp difference on Dyno Dynamics but only 64whp difference on Mustang Dyno Please help me understand this... |
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12-13-2008, 11:30 AM | #487 |
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^Aside from being the worst posted scanned dyno printout, was there something messed up with the dyno itself? It doesn't even look like the Tq and WHP plot cross at 5252 RPM.
Again, back to being the worst scanned printout ever, was the pull stopped at 6400RPM when HP was still climbing? |
12-13-2008, 05:15 PM | #488 |
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its obvious...
there is something wrong with the car or something wrong with the way its beng run on the dyno or something wrong with the way the dyno is being run or something is causing it to under perform on the second dyno (or prior to arriving) I would stand behind the original number 100%. a mustang will pull higher than an RR Dyno Dynamics dyno, period. Lots of things could be in play - boost and afr graphs for the second set of pulls ? was the car running full ignition advance ? was the IC fully fanned (looking at a big fan doesn't mean it is, you need temps) ? what were the intake temps at the start of the pulls ? was the car changed since it was on the RR dyno in any way at all ? yadda yadda. So in essence, the only people who can tell you why this car pulled what it did in someone else's shop are the ones who pulled it the second time, because from the data they could tell you what the car was doing (if its the car that is the problem). But I do know what it pulled when it was on the RR dyno and I would stand behind those numbers 100%... Ramp rate, acceleration rate, pull time, boost targets, fanning, current advance, etc. can all lead to make a pull do whatever you want it to. Or lots of other 'magic' factors. That is why you do 'normalized' pulls... or the car could just be doing what its doing. since its all about 'posting for a friend' it would also be useful to know more about the circumstances, i.e. if your friend wants the problem with their car figured out, if there even is a problem, to get an idea of what car this is. Easiest way to get to the bottom of it is to identify said friend, and pull it again. The mustang will always pull higher... so I would say it would pull about 265 or lower on my dyno if everything remained the same... There have been lots of interesting things happen with more dynos coming online but I will stand by my numbers 100% as do the local PCA club, the local Nissan club, the local Audi club, ICBC (!), several lower mainland car dealerships, and several manufacturers doing warranty work... etc etc Last edited by patr; 12-13-2008 at 05:50 PM. |
12-13-2008, 05:49 PM | #489 |
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What do you guys charge for re-tunes again? I already have a map done by you on the car. I'm looking to buy a few more things and make another visit.
Ryan |
12-13-2008, 05:54 PM | #490 |
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The purpose we did the dyno again on Mustang Dyno was because another friend of ours keeps saying Mustang Dyno has lowest number and we were trying to prove he was wrong.
Before we started doing the dyno pull they asked how much power we made at RR we told them 347whp. The car was exactly the same when doing the two dynos. RG didn't give us any information other than the print out. They got one fan up front claiming that's a $4000 fan. (when I was trying to tell them RR have 3 large fans up front, they said the $4000 fan they have there is better than the 3 fans RR have) Last edited by j-velocity; 12-13-2008 at 06:06 PM. |
12-13-2008, 06:13 PM | #491 | |
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Quote:
Sorry for the worst posted scanned dyno printout...I uploaded a better one just now.... and yes the pull was stopped at 6414 rpm |
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12-13-2008, 10:46 PM | #492 | |
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12-14-2008, 01:23 AM | #493 | |||
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Quote:
So, you can trust people that actually have first hand knowledge, or you can do something else. You can also do a search and read the forums HERE on nasioc, where the people "that know", know. the dyno dynamics reads lowest. then the mustang. then the dynapack and dynojet (dynapack reads very high though on automatics). a car that pulls 290 on a mustang will be 265 on my dyno, all things being equal (which they are more often, not equal). Anyways to do a real comparison you need to be in control of the dyno so that you can be sure that it is being run the same way. Quote:
Quote:
instead of slamming other shops' gear, maybe there is actually something wrong with the car. You can even scroll up in this thread where I offered the owners of that shop a case of beer if their 500hp dyno graph car broke 450 on my dyno... and all for free. Do you think I would do that if mine reads higher ? But just for the record we dont only have three fans up front (its 4 actually) but two in the rear and a dedicated exhaust flute. So 6 fans, two of which are $900 and the other 4 $3k each... but its not about how much they cost. You could buy a $20000 fan that would be useless. If you hold the car at WOT at 4500 RPM, for like 10 seconds, if the car runs the same intake temps and ignition advance that it runs on the road, then you know you have the fanning right. I challenge someone to do that with a single $4000 fan without detting the hell out of their sti. And if I only had $4000 to spend on fans it would be on 2 carpet dryers for ICs and one $2k 36" fan as sold by Acklands Grainger. In fact I challenge someone to even hold any car at full boost and fixed RPM for 10 sconds at all on a lot of dynos. Is this car a top mount car, or a front mount car ? do people have any idea at all how bad it is to not specifically fan the ICs on these cars ?? Anyways it would be nice to know who's car this is. There is absolutely no point to having plots made where the car is nbot replicating what its goins to do on the street. We bought the DD despite its low reading because it was and still is the best tuning tool. A pain in the ass to people who want 'fat' numbers, but a godsend to the 400+ out of 400+ folks who have not blown up their engines. Last edited by patr; 12-14-2008 at 01:38 AM. |
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12-23-2008, 02:55 AM | #494 |
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well, IMO, why should i give a shop a chance who has even had one complaint? ive never heard anything bad about Pats tunes and therefore i would certainly go to them before RG. Blitzkrieg is also decent from what i hear so i would check them out.
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01-07-2009, 01:43 PM | #495 | |
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01-07-2009, 02:00 PM | #496 |
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I feel the need to interject here on my shop's behalf. I don't know how this turned into a "who's dyno reads lower" competition, but regardless there are a few facts not being represented. The Mustang dyno uses a slightly different method of reading horsepower than a Dyno Dynamics. In the Mustang configuration, the dyno uses a combination of roller inertia, which in AWD mode is about 3,800, and eddy current (magnetic) loading. The Dyno Dynamics is set up to be almost purely calculated based on eddy current loading, with the roller inertia being almost negligible. Therefore, there is no ramp rate setting as such, although we do have a 'pull time' setting. This can be switched to a low number, effectively disabling eddy current loading, and operating just off roller inertia, and the numbers will never change more than a couple HP. The one reason we really like the dyno, despite it's low numbers, is it's consistency. There is no setting that can be changed to mess with the numbers, other than a blatantly wrong entry in the calibrations.
The car in question was given ample time between pulls to cool down, and the consistency between 3rd and 4th gears would lead you to believe that heat soak wasn't the issue. We weren't asked to check whether the ECU was being conservative on timing, but AFR and boost were logged, and the engine was running well, we could post more data if you want. 290whp is actually a very respectable number on our dyno, the average late model STi does about 200-210 in stock form, with most modded stock turbo ones being in the 250-260whp range. |
01-23-2009, 06:07 PM | #497 |
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ramp rate (DD) == delta rpm rate (Mahle) == pull time (mustang / dynapack). anyways, free (inertia) pull time vs 15sec pull time will most definitely not yield the same timing numbers without IC fanning on a TMIC STi when doing more than 1 pull. at least in my experience, but anyways for fun,
here is DD 242whp: http://www.youtube.com/watch?v=4Yd5XGcnPgY this car actually pulled 279 on a Mustang dyno @10 secs and 301 on a Dynapack @10secs and it would spin its wheels on the Dynojet (due to the tq numbers), but since its running fixed timing on a standalone: we can look at numbers and say only ones where all pulls start at 91C coolant, and throwing out any runs where coolant > 96 or intake or charge temp were outside of 5deg of the normalized (baseline) pull. And you get these numbers. The only deviations were minute ambient pressure (varying from 101 - 103 kpa), but again we normalized the intake CHARGE temperatures (measured using an STiv8 manifold temp sensor just above the intake ports on the head) at 45 C using each shops' different fan setup. Not intake temp, charge temp. But to make life simpler for most people (that dont understand) but if you take an NA car that is running maxed timing its easier to compare how the dynos read (because you take the natural different everytime nature of a turbo engine out of the equation). you'd get the same results as the normalized test above. i.e. a 2.5RS pulls 125 or so DD. Last edited by patr; 01-27-2009 at 02:04 PM. |
01-24-2009, 03:28 PM | #498 | |
I'm sorry for apologizing
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01-24-2009, 03:51 PM | #499 |
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Well ya gotta fit a little self promotion in there somewhere
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01-24-2009, 08:01 PM | #500 |
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