|
|
|
Post Reply |
|
Thread Tools | Search this Thread |
02-16-2012, 01:52 AM | #67 | |
Second Lieutenant
20
Rep 235
Posts |
Quote:
To go back to the discussion, I do understand that they overestimate. But overestimating for more than 150% of the gain is a little concerning. The two Dinan cars here produced similar power. I've also looked at the charts on post 14. However, it still stands that none of the cars (disregarding the car having issues with the tuning) produced power that is even close to what it should produce. All the charts show a drop in torque figures while every single product is supposed to produce a gain in torque. Edit: I meant to say that the modded cars produced less torque than the stock car. I cannot possibly know the torque figure of the modded cars when they were stock. Hence, I cannot know if they produced less or more. Last edited by Nition; 02-16-2012 at 02:08 AM.. |
|
Appreciate
0
|
02-16-2012, 02:05 AM | #68 |
Second Lieutenant
20
Rep 235
Posts |
With regards to Frank's car, I have made some calculations. Please feel free to correct me. Here are the claimed gains from the website:
Dinan rear exhaust (+6hp), Dinan mid exhaust (+23hp), Dinan pulley (+11hp), Dinan mid-pipe tune (+9hp). Total = 49hp, which should convert to about 30whp. You say that his car made +20whp or more. Although this is impressive, it is still substantially less than what is claimed. |
Appreciate
0
|
02-16-2012, 07:30 AM | #69 | |
Major General
592
Rep 5,396
Posts |
Quote:
Second of all, there is a thread right now by EAS that shows a stock car dyno'ing over 350 whp on their dyno. So it has been done before, and there are other examples of it as well. You cannot compare other cars to each other in terms of absolute numbers regardless of mods or not. It isnt a fair comparison. For example, you state that the dinan mods should make 25 more whp than the stock car but that franks only made 20 more. It is entirely possible that franks car could have made 5-10 less whp than richards car if dyno'd stock, then the dinan claims would have been substantiated. Trying to make the predictions like you have without the proper data is not accurate. And again, the 09 car showed a gain of torque to 261 ft/lbs. EDIT : Talking about overestimating gains........aftermarket intake companies have been advertising 10+ whp gains on most cars for years.....most of them make zero HP. A good example of this is the e46 m3.
__________________
|
|
Appreciate
0
|
02-16-2012, 08:09 AM | #70 |
Grown Azz Man
429
Rep 3,021
Posts |
Who's to say they are not Here's what you really need to consider. If we had driven to another dyno right after these runs, do you think we would have gotten some different results? There's a pretty good chance of it happening. I would imagine that these manufactures run their test in perfect conditions and they do so until the desired outcome is achieved. The average gear head goes to the dyno not knowing if the machine has been calibrated or if the conditions are ideal for a run. So if I were you I wouldn't put a lot of stock into the claims some of these guys make. As I stated a few post ago....it's marketing and get this.......it's all legal. I'm sure they have a run file in the fault to back up their claim in the case of a lawsuit.........Phil
__________________
2016 GT4.....Sapphire Blue Metallic, Platinum stitch Leather/Alcantara interior, Carbon Fiber Trim, PCM w/Nav, Guards Red Belts, 2 Zone Climate, Sport Chrono, LWB, Smokers Pack, Big Gas Tank, Light Design Pack, Bi-Xenon w/PDL, Auto Dim Mirror, Clear Side Markers, GTS Clear Taillights
|
Appreciate
0
|
02-16-2012, 09:26 AM | #71 |
Private First Class
12
Rep 136
Posts |
This is fascinating data and coversation! Wish I had been able to join you guys that day with my stock E90. Just to throw in one more wrench into the apple and banana comparison.
Forgive the newb question, but why do auto manufacturers report HP at the crank and not the wheels? Isn't whp what really matters?
__________________
2011 E90 M3 - Jrz Blk - 6MT |
Appreciate
0
|
02-16-2012, 10:25 AM | #72 |
Captain
74
Rep 722
Posts |
Need baseline dyno's to make this a fair and accurate comparison. Fabspeed xpipe w/HFCs and Powerchip tune gave me a 26 whp increase over stock.
|
Appreciate
0
|
02-16-2012, 10:32 AM | #73 |
Captain
74
Rep 722
Posts |
Bolt-on mods definitely makes the car go faster in a straight line... The last time we hit the local drag strip, stock M3’s were running 13 seconds in the ¼ mile and 2 M3’s (mine and disapr w/HFCs and tune) were running 12.6 and 12.5 seconds, respectively.
Btw, Richard has us all beaten on the track! |
Appreciate
0
|
02-16-2012, 10:40 AM | #74 | |
Captain
74
Rep 722
Posts |
Quote:
Unless someone has independently dyno’d the car (before and after) I wouldn't believe what the manufacturers publish |
|
Appreciate
0
|
02-16-2012, 06:51 PM | #75 | |
Second Lieutenant
20
Rep 235
Posts |
Quote:
I will agree with you that making dumb calculations like this is very inaccurate. However, I am still not convinced that the manufacturers are being honest. This is an independent dyno test and I trust that this dyno is accurate (mainly because you guys have nothing to gain from it other than the information you have presented). And from observation, the dyno results provided by manufacturers differ significantly from what is shown here. |
|
Appreciate
0
|
02-16-2012, 09:58 PM | #76 |
Lieutenant Colonel
265
Rep 1,696
Posts |
So either all the manufacturers and vendors are being dishonest on their numbers, or the dynojet at MSR Houston was highly uncalibrated to skew the numbers low.
I really wish I had gotten a dyno done when I was stock. I literally went from stock to full-bolt on in one day. On a Wednesday, I only had the Dinan rear muffler. On Thursday, I added the Dinan mid-pipe, Dinan mid-pipe tune, and Dinan pulley. |
Appreciate
0
|
Post Reply |
Bookmarks |
|
|