Ok Sal so what do you think the problem is? B/c before the tune my cars AFR was fine and it made 425rwhp on a mustang dyno which is a lot(almost 570 crank HP) all ive added is an RPI pulley and the Alpha N tune and now the AFR's are high and its making less power.
Your car was tested in P400 mode. I have this confirmed from the dyno operator. I don't even need confirmation because I can see the power curve is that of P400.
If you want to compare dyno's from different days please present the correction factors also otherwise (like I have mentioned many times on many forums) the dyno tests are worthless and meaningless. Both corrected and uncorrected results should be presented.
E39 M5 Tuning
AlphaN, Power Tuning, Cold Start Delete, SAP Delete.....
LHD RHD Medusa Headers, High Flow CAT's
Carbon Fibre Intake System
CAT Back Exhausts
Stage 1 Supercharger System
Stage 2 Intercooler Supercharger System
E60 M5 Tuning
Power Tuning, AlphaN, Cold Start Delete, CEL Light Removals
5-1 Long Tube Headers
E-Tronic CAT Back Exhaust
Carbon Fibre Intake System - In Development.....
Last edited by evolve automotive; 6th August 2012 at 14:10.
Evolve ECU Tune, Tubi Rumore exhaust, BBS RGR rims; Polk Audio Tweeters, 5500K Osram Cool Blue HID,Valentine 1 Radar Detector; Laser Interceptor Laser Jammer; All LED interior lights, LED footwell lights, LED trunk lights, Ultimate Cup Holders, 3rd brake light LED flasher, ash tray delete; LED license plate lights; RPI Ram Air Scoops + Block off plates; BMC Air Filters.......
By casually reading this post, it would seem that the local "tuner" for built240 may not be experienced with our particular brand of vehicle. Just sayin'.
The good news is that 515 crank horsepower in p400 mode is pretty darn admirable-and I suspect it means that in p500s mode that 600 crank horsepower is likely.
The OP seems to be pretty sure that the car was not in P400. And it makes sense as well since it is quite unlikely that the operator would not hit the "M" button and use the "DSC" button to turn off the DSC. It is not possible to test the car on a single axel dyno without turning off the DSC.
I guess, the only way to make sure is to put it on the dyno again.
By casually reading this post, it would seem that the local "tuner" for built240 may not be experienced with our particular brand of vehicle. Just sayin'.
The good news is that 515 crank horsepower in p400 mode is pretty darn admirable-and I suspect it means that in p500s mode that 600 crank horsepower is likely.
you've misread something along the way. his car put down 425whp (515bhp) in p500 before the alpha N tune and the pulley. It put down around 300whp in this dyno.
Thanks Eddie-the problem i also have is that his car also is running without cats which should free up about 40 wheel horsepower and an evolve tune should net him 20-30 whp. If i were him, I'd take the car up to EAS in Anaheim which is pretty close to San Diego and out it on their dyno.
I'll bet it is fast though.
Bill
Clearly, it just needs to be tested again by a knowledgeable shop.
As far as being in P400, it could be that when the DSC button was pressed that the power button could have also been touched. I've had this happen myself when not turning DSC off carefully. I usually use MDM S5 for launches (when I'm feeling lazy and not wanting to modulate the Beast from a dig) and then press DSC to turn it off after I'm moving. A few times I've done a sloppy job and ended up turning off the power button too (actually happened against a 2009 GT-R before and I thought the beast was broken...)
I doubt it's the case with this situation but it could be the reason that built240 thought it's still in P500 but the dyno is showing P400 performance.
-b.
Quote:
Originally Posted by Hasan Shaikh
The OP seems to be pretty sure that the car was not in P400. And it makes sense as well since it is quite unlikely that the operator would not hit the "M" button and use the "DSC" button to turn off the DSC. It is not possible to test the car on a single axel dyno without turning off the DSC.
I guess, the only way to make sure is to put it on the dyno again.
The OP seems to be pretty sure that the car was not in P400. And it makes sense as well since it is quite unlikely that the operator would not hit the "M" button and use the "DSC" button to turn off the DSC. It is not possible to test the car on a single axel dyno without turning off the DSC.
I guess, the only way to make sure is to put it on the dyno again.
As an expert in the V10 field and having tested your own car so many times I would expect someone of your knowledge to be able to tell the difference between a P400 graph shape and P500.
The dyno shop has confirmed that the car was tested in P400 mode.
I have given on the previous posts a clear description of what P400 looks like yet you clearly ignored this.
So I will make it clear to you again -
P400 has a much flatter lower graphs and the AFR is between 14.7-15 AFR until approx 6800rpm. The system runs in part throttle opening even with the accelerator pedal to the floor. What is the normal AFR in part throttle? 1 Lambda (14.7 AFR).
We are currently awaiting graphs now with correction factors.
We may have a situation where the pre AlphaN tests had a CF of 1.03 and post 0.95 (for example).
Once we get these we can continue.
Shop has kindly offered to do a tuning session while I am online to make sure we get the power quoted.
So the proceedure will be as follows:
We will load an AlphaN file with stock power calibration (so no changes to ignition, VANOS, Fuel, Torque calculations etc). Allow it to adapt.
Take a baseline dyno test.
Car will not move from dyno.
AlphaN with power mapping will be loaded and we will see the difference.
Like many other tuning sessions we will be monitoring intake, oil and coolant temperatures so that we make sure complete consistency is achieved and the true power gain shown pre full adaption.
Multiple users of our power tuning have seen significant real world improvements (both racing and timed). There is no reason that dozens of other cars react properly and this one doesn't.
23Likes
Linear Mode
