A friend of mine had the exact same problem with his b16a at a "certain workshop".Thats the only reason I was curious.....;)
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A friend of mine had the exact same problem with his b16a at a "certain workshop".Thats the only reason I was curious.....;)
honestly the tune doesnt look THAT bad.
it spikes alot - tuner didnt bother to put smoothing on, this arises just from the dyno itself, how well it spins ect, much more detailed then that.
Power past ur ecu rpm - bad calibration, will arise from the factory tacho being off.
the no large increase in power due to high cam(vtec) - this is due to him doing a good job on the crossover rpm, idealy u dont want a sudden jump of power.
Getting an ecu aint all about gaining power, its about gaining drivability, how does it drive on the street? and i am serious, unless u got some stage three toda cams or some hardcore shit u dont want a jump in power due to high cam crossover.
Show us a pic of the AFR, hows about base vs final tune graphs and then i shall make a decision.
First off i thought the point of a tuner is too smooth off the curves? I could be mistaking but i was under that impresssion. Power past ecu rpm? Aint got nothing to do with the tacho. POWER FC is SET AT 8888 thats what its set at you can check by scrolling through the hand controller. Its obvious by readin the dyno sheet that is says max power is XXX@9XXX. I didnt show the rest due to legal reasons. As for the no sudden jump. And yes i am expectin a jump. There should be a slight drop at 7.2rpms as it jump to high cam crross over then a gain. I'm not stating mod but you can assume what you will why im saying this. As for power? well **** that was a total dissapointment. Both my friends dc2r got dyno'd same work shop STOCK ecu both have done, headers, exhaust, intake and thats it. I've done that and more plus a power fc thats meant to fully tune that and i got basically same figures as them.Quote:
Originally Posted by CUL8R
Driveablitiy wise the idle was set way too low which was fixed by a second tuner inspecting the damage . Honestly speakin car does feel smoother but has way less power then it was before i tuned it. Top end revs drop out for some weird reason and there more and more. I can bitch all day.
look theres a setting on the dyno software to smooth curves. have a good look at urs heres wat it woulda looked like if he pushed the button
http://i14.photobucket.com/albums/a309/CUL8R/smooth.gifreally it aint bad.
ur friends prob suffer from hesitation on part throttle.u wont coz u got a non stock ecu
dude post up AFR and BASE/FINAL tune plots with the company blacked out with a square so we can see it all, this looking at one plot is very narrow minded.
i know my tuner well and i actually get a chance to sit in the car and speak to him as he works, u are never gonna get a perfect linear power curve like the smoothed pic i showed, but the smoothed pic is a good indication as to if its any good or not.
did ur tuner change vtec crossover? coz looking at it theres two clear distinctive gradient line of power, but i cant see what rpm it represents
I don't have a scanner so i took a picture of the more significant section. Look i know the graph is jumpy because the second opinon tuner has gone through the power fc and told me that the figures that was inputted were all over the place.
I was really expectin 125-135 kws. I've had thiese figures in the past with different ecu (piggy back). Yes i know you cant compare different dynos. I'm just not happy with this at all.
We cant really say much without scanning the dyno sheet for you to have a look at.
Can you please Pm me ur tuner?
Secondly I think i'm going to get craig from revzone to redyno my car. His had yearssssssssssss of experience with power fc and can promise me 120+ figures with a smoother power band prior to adjusting cams.
If anyone has anything against this or have any recommendation on good tuners please pm me. I don't wanna fall for the same trap twice.
In the end result you want a car you're happy with, happy with the driveability etc etc. Car is underperforming for what i've expected but power isnt the main issue either just the top end is rubbish.
Oh i forgot to mention he didnt print out AFR ratio for me nor did he do base/final dyno. He said there was no point since its un tuned ecu -_-
PM SENT
the greatest line there was
i think the key here is to understand that and when making a big purchase such as an ECU is to not have too great of expectations.Quote:
Yes i know you cant compare different dynos.
i rekn the thing to look at here is base/final and AFR graphs, this is what tuning is all about, making a safer AFR whilst increasing power/torque and responce
are you serious man?!Quote:
Originally Posted by CUL8R
NA power delivery is spose to be linear, hence a smooth power curve!
this one jumps around like its on spd - its not normal or tuned properly by any means.
my turbo graph is smoother than this, and my tune was only an average one!
dyno graph update. only thing you cant see is ont he left hand side which is power.
My personal advice dude, change your tuner ASAP.
because there is a button on the dyno program which smooths the line out more.
i am gonna try and see if my tuner has my original final tune and then smooth curve.
a dyno gets a graph from voltages and junk, these figures do not come perfect so u need to have a line of best fit or somethign to smooth results. when u measure things like current drops over resistors or soemthing why is it that ull take 5 readings then average em? because ur reading will never be perfect unless u choose to spend excerssive money on accuracy. dynos are relativly cheap, 50k, to think they are gonna measure things absolutly perfect would be ignorance
this has dips over prob what i can see maybe 1hp over a 50rpm bracket, think about the scaling here.
dips in the wrong place. vtec is set at 7.2prms. Theres also a dip before 4 rpms that goes thru to 5 rpms for no reason. Uncharacteristic.Quote:
Originally Posted by CUL8R
Does anyone know if there is margin in the fuel cut? I mean technically, can the ECU really cut fuel and stop revs rising to the exact single RPM - 8888? With the Apexi RSM on the Euro I have seen peak RPM on the RSM show above the 7300 fuel cut (eg a reading of 7420). The RPM reading has a direct wire into the Euro ECU so it should be accurate. I think with momentum at speed you can get the revs to rise beyond the exact cut point quite easily.Quote:
Originally Posted by Mashimaro