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Old Oct 30th, 2007, 04:05 PM   #41
roland2003
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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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Old Nov 1st, 2007, 09:27 PM   #42 (permalink)
Paul Webster
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Any news Al

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Old Nov 1st, 2007, 09:53 PM   #43 (permalink)
Lucky Dave
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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.

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Old Nov 1st, 2007, 10:02 PM   #44 (permalink)
Paul Webster
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You mean just like a JCW map 10.6-11.9, wouldn't you see these egt's & af's with 330s and 380s

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Old Nov 1st, 2007, 10:38 PM   #45 (permalink)
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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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Old Nov 2nd, 2007, 01:06 AM   #46 (permalink)
MiniPetrolHead
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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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Old Nov 2nd, 2007, 01:13 AM   #47 (permalink)
Paul Webster
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Better tell him to get up the Pod on Sunday

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Old Nov 2nd, 2007, 06:37 AM   #48 (permalink)
roland2003
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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
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Old Nov 2nd, 2007, 09:31 AM   #49 (permalink)
Ant FR
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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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Old Nov 2nd, 2007, 09:42 AM   #50 (permalink)
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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.

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Old Nov 2nd, 2007, 10:03 AM   #51 (permalink)
Ant FR
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Quote: Originally Posted by 1320autos (original)
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.

.

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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Old Nov 2nd, 2007, 10:17 AM   #52 (permalink)
roland2003
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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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Old Nov 2nd, 2007, 10:19 AM   #53 (permalink)
Ant FR
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Quote: Originally Posted by roland2003 (original)
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.
Ive been in this buisness probably before you were born, we get to hear alot of things, ..magazine journalists, show gossip etc etc.


That would make you 50 Roland, whats your secret,
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Old Nov 2nd, 2007, 10:29 AM   #54 (permalink)
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...ok when you were 4 . Secret is 1-2 hours drumming a day, Im 46 .
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Old Nov 2nd, 2007, 10:34 AM   #55 (permalink)
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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

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Old Nov 2nd, 2007, 10:50 AM   #56 (permalink)
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Quote: Originally Posted by roland2003 (original)
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.

Maybe good for difference figures but thats it, my standard MCS 163bhp came out at 197bhp at "Powerstation"

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Old Nov 2nd, 2007, 11:47 AM   #57 (permalink)
alski
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Quote: Originally Posted by Cooooooperslad (original)
Maybe good for difference figures but thats it, my standard MCS 163bhp came out at 197bhp at "Powerstation"

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

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Old Nov 3rd, 2007, 12:37 AM   #58 (permalink)
Cooooooperslad
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1320's dyno!

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Old Nov 3rd, 2007, 01:19 AM   #59 (permalink)
Loui
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Quote: Originally Posted by alski (original)
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

But with the butt dyno cant other senses play tricks on you???? like a louder exhauts makes you sound quicker???? so you feel your going quicker????
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Old Nov 3rd, 2007, 01:37 AM   #60 (permalink)
alski
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Quote: Originally Posted by Loui (original)
But with the butt dyno cant other senses play tricks on you???? like a louder exhauts makes you sound quicker???? so you feel your going quicker????

good point, ear muffs have now become essential testing kit for me
or ipod playing windy miller, that should counter any psychological effect

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