| Tags: mini cooper s, rolling road |
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| | #41 |
| MINI 2 Sponsor GT Tuning Join Date: Jan 2004 Local Time: 09:03 PM
Posts: 2,731
Offline | GTT250& GTT260 include a remap which can be scalled for either 380 or 450cc injectors. The Shrick cam requires more fuel than the stock cam. Using 450 injectors without scaling will usually benefit most cars by a reduction in fuel pressure. This is a better way to go about it as above around 17psi boost, fuel pressure at the rail maxes out with a stock FPR. Drop the pressure say 5psi and you can go to 22psi of boost before it maxes out. The lower pressure requires either more duration or larger orifice injectors to achieve the same AF ratio as before. |
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| | #43 (permalink) |
| Thinking Minis | I would like to see some more information on the report of how the cars running. I can agree with Roland and my testing logging A/F and EGTs backs up the use of 450 injectors with the correct fuel pressure. Im finding an air/ fuel of between 10.6 - 11.9 works well and keeps the exhaust temps steady. To clarify, non of the cars O2 sensors make any differance to wide open throttle fueling. For All Your Mini's Needs ![]() 01905 620011 |
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| | #44 (permalink) |
| MINI2 Master Join Date: Jul 2005 Location: Beds Cambs Northants Local Time: 09:03 PM
Posts: 1,956
Offline | You mean just like a JCW map 10.6-11.9, wouldn't you see these egt's & af's with 330s and 380s Slicks 11.77@115.92mph Street tyres 12.162 @ 119.02 It's not how much you spend but how well you spend it |
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| | #45 (permalink) |
| Trailer Trash Join Date: Mar 2005 Location: Pipe Creek, Texas Local Time: 04:03 PM
Posts: 163
Offline | In open loop operation, such as full throttle and warm up, O2 sensors are not called upon, maps guide fuel delivery, but the time spent in open loop is a very small fraction of the total. AFR numbers are being quoted as if there is an ideal that fits all, but timing and IAT play an important role along with other MINI program variables that determine where the optimum ratio is for a particular vehicle and rpm. |
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| | #46 (permalink) |
| 263bhp / 284.55Nm Torque Join Date: Oct 2006 Location: Eastbourne E.Sussex Local Time: 09:03 PM
Posts: 670
Offline | Tell me what you think of this! A mate of mine had a few bits fitted to his MCS by a mini specialist, who also happen to be a superchips dealer and he got a mind blowing rolling road result!!! This is what happend: When the car went in, it was standard, then it had a 15% pulley fitted, 2% light weight crank pulley, alternater pulley, throttle body, alta induction kit and alta V2 intercooler, and iridium plugs. all this with a custom re map, his 52 plate MCS made 236bhp!!! how does this work when he doesnt even have a performance exhaust manifold or cat back section? Alex |
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| | #48 (permalink) |
| MINI 2 Sponsor GT Tuning Join Date: Jan 2004 Local Time: 09:03 PM
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Offline | hi, yes from this you can see my point about the question mark when the supplier/fitter of the parts is the same company who provide you with the RR printout to 'prove' what they've done delivers 'amazing' results ![]() Best Results Roland GTT |
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| | #49 (permalink) |
| MINI2 Master | but i would'nt want to label all suppliers/fitters as liars, so you saying if i go to 1320, Paul does some work then dynos and sets the rollers to give me a better figure, if i go to what was AMD they would do the same, if i went to minispeed they would do the same. Sorry i just don't buy that. If that is the case Roland, what would make you any different. Why should we believe you more than any of the other suppliers of fitters out there. I appreciate some may, but i would expect most of the mainstream places to be 100% genuine. Annoys me when RR figures are posted and people just pour scorn on them and play the conspiracy card. |
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| | #50 (permalink) |
| MINI2 Master Join Date: Jul 2005 Location: Beds Cambs Northants Local Time: 09:03 PM
Posts: 1,956
Offline | I think thats where we differ from the rest is that we take our car or encourage customers to go to the real world dyno Santa Pod, so it would be commercially suicidal to do anything but produce real gains. You always have to look at the pre dyno and post dyno figures and judge what you see on the gain. The first question you have to ask is where has the rpm limit been moved to. Slicks 11.77@115.92mph Street tyres 12.162 @ 119.02 It's not how much you spend but how well you spend it |
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| | #51 (permalink) |
| MINI2 Master | Yeah i was'nt saying you would do that, obviously, just using as an example of a reputable place ( that'll be £50, just send me a cheque ) I'll be up Pod on sunday, might even strip it with my new wheels on, but going up with brother, just had his carbs all set up last weekend. Stripped out Nova on 2.0 16v C20Xe running twin 40's, RR'd at 182bhp at the wheels, so should be fun, he's hoping to beat his mates 13.1 the in a 2.0 Nova |
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| | #52 (permalink) |
| MINI 2 Sponsor GT Tuning Join Date: Jan 2004 Local Time: 09:03 PM
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Offline | criky calm down Ant. ![]() The best option IMO is use a non Mini tuners RR ,at least you know theres no reason to either make the figures higher or lower than they realy are. Of course not everyones going to do that , and even then, the Rollers still may not be correct. And no Im not saying 1320 do that either Ive been in this buisness probably before you were born, we get to hear alot of things, ..magazine journalists, show gossip etc etc. |
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| | #55 (permalink) |
| MINI2 Master Join Date: Jul 2005 Location: Beds Cambs Northants Local Time: 09:03 PM
Posts: 1,956
Offline | Thats why the 30-70 in 3rd is a good test and I believe the 2800 -6800 in third is a better test, Unfortunatley you still have human error but its good fun ![]() Slicks 11.77@115.92mph Street tyres 12.162 @ 119.02 It's not how much you spend but how well you spend it |
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| | #57 (permalink) |
| dyno-mite, might not.... | quite right lies dam lies and statistics, but if not the RR then what? people laugh at my butt dyno approach, but if you cant feel it while you drive then whats the point, ![]() i cannot envisage that the day will come that i will have spent enough time on the track or the strip to show enough consistency to judge any mod's i make to the car anyway, ignoring all the other variables like wet/dry conditions, traffic, temperature .....etc having a bit of paper showing a big gain above 7,000 rpm is just as meaningless on the road as well or am being too simplistic ![]() not knocking anyone here, just making the point that we have to take a lot "in trust" so to speak, my car is just one of my hobbies not my living so i can also understand why some of our vendors can appear a little heated, a stray remark taken as fact can cost these guys big time so cut Simon some slack ![]() ![]() carefree |
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