Not So Good Rolling Road Result

[Paul@1320]

Roland has made 273bhp and 240whp with standard injectors and I know that we've seen 200-210whp 230-240bhp with std Injectors and with the 380s we saw 220whp 250bhp.

So I would stick the 380s back in.

[roland2003]

Hi Allan, what you need in the first instance is our AFPR. This we can preset to reduce the fuel pressure slightly. The injectors you have are the better size to use with head/shrick cam combo.We can supply MTH remap but need the car here to do. RRP for mth is 560 Euro +vat.
Which is a lot more than it used to be unfortunatly.
Best Regards Roland GTT

[Revolution Mini Works]

it seems to me everyone is putting a tuniquet on a paper cut

isn't there anyone who does mapping ?

[Paul@1320]

I presume they must of re-dyno it as they say about the AF being to rich.

Did they say what the afs were??

Did they say what peak trq and hp was now??

Did they find the previous missing hp??

[Aberdeen Al]

Quote: Originally Posted by roland2003 (original)

Hi Allan, what you need in the first instance is our AFPR. This we can preset to reduce the fuel pressure slightly. The injectors you have are the better size to use with head/shrick cam combo.We can supply MTH remap but need the car here to do. RRP for mth is 560 Euro +vat.
Which is a lot more than it used to be unfortunatly.
Best Regards Roland GTT

Hi Roland - Thanks - I'll give you a call later about the AFPR.

Can't justify the trip to you for the re-map at the moment.

Just to clear up things mentioned above - yes some cars will get away with standard map but according to the guy working on my car (and test drove it this morning) states it seems to be struggling and not very smooth.

Oh the joys !

[Revolution Mini Works]

Quote: Originally Posted by 1320autos (original)

Roland has made 273bhp and 240whp with standard injectors and I know that we've seen 200-210whp 230-240bhp with std Injectors and with the 380s we saw 220whp 250bhp.

So I would stick the 380s back in.

I am confused here::::

Roland made 240whp with stock injectors but they put in 450cc injectors on a car only making 190bhp?

[Paul@1320]

What whp and wtrq have you seen with stock 380 etc etc Jan??

[Revolution Mini Works]

Quote: Originally Posted by 1320autos (original)

What whp and wtrq have you seen with stock 380 etc etc Jan??

with a JCW head , injectors and my tune 201whp and 168tq
this dyno read like a mustang dyno
before tune 183whp and 160tq

stock head 15% pulley, 380cc injectors , borla street exhaust
and tuned 190whp 163 tq

before tune 178whp 156tq


we had a GP on the Helix dyno....( the heartbreaker)
we put my custom header on it and tune and it finished with 198whp 170tq
over 700 mini's have dyno'd there and there has ONLY been 1 car to ever break 200whp on that dyno until we brought 5 RMW cars there... the board has been re-written

another JCW car showed up there and put down 166whp with exhaust and finished
after the head/header/tune with 218whp and 170tq ... not to mention 150k on the old supercharger

[k-huevo]

As I understand it, scaling non-OEM/Siemens injectors requires dedicated tables & maps.

I experienced an interesting phenomenon recently; I replaced my aging O2 sensors and acquired improved performance & gas mileage (2mpg+) as a result. O2 sensors can become lazy without generating a fault code; some have attributed slow sensors to everything from collapsed ring lands on the lean end to sluggish behavior on the rich end.

[Revolution Mini Works]

Quote: Originally Posted by k-huevo (original)

As I understand it, scaling non-OEM/Siemens injectors requires dedicated tables & maps.

I experienced an interesting phenomenon recently; I replaced my aging O2 sensors and acquired improved performance & gas mileage (2mpg+) as a result. O2 sensors can become lazy without generating a fault code; some have attributed slow sensors to everything from collapsed ring lands on the lean end to sluggish behavior on the rich end.

it's easy enough to scale the injectors if you have the proper software to do it

Keith,
can you get me old O2 sensor connectors?

jan

[roland2003]

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.

[Paul@1320]

Any news Al

[Lucky Dave]

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.

[Paul@1320]

You mean just like a JCW map 10.6-11.9, wouldn't you see these egt's & af's with 330s and 380s

[k-huevo]

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.