
Vxr Turbo Upgrade
#1
Posted 17 April 2012 - 04:10 PM
#2
Posted 17 April 2012 - 04:13 PM
Edited by rob999, 17 April 2012 - 04:20 PM.
#3
Posted 17 April 2012 - 04:40 PM
thimking of taking my car to courtneys for the vxr turbo upgrade and then remap but wonder if im on a slippy slope cost wise? currently car is tms stage 3 which courtneys reckon will need messing around with as they werent the best set ups as most of you know! car certainly seems to have more oomph then the standard one i tried and if i could get a decent 260 bhp i would be happy but courtneys are quoting £1500 ish for the work and i wonder how much i would notice? i guess i need to gfet it on rr too see what kind of power it has now...
If that's got the TMS chargecooler then adding it should take it to stg4 my old VXT started life as a TMS stg 4 that was reworked by courtenays some more details
We've had a TMS4 on our dyno that read 255.1 bhp and 280 lb ft torque......... So in line with what you've been given.I find these figures highly amusing.I run stage 4 tms and my graph showed max 255bhp.I think its high time tms and courtneys go to a rolling road shoot out,middle ground rolling road,Any body else agree?
The same car we then mapped with our Stage 4 software which is different to TMS software and the same car on the same dyno on the same day produced 269 bhp and 306.6lb ft torque
The reason the figures aren't as good as the Courtenay Stage 4 is there is a restirction the in the OE intercooler/charge cooler set up........
A VXT mapped on our software with our new cooler full Milltek, VXR turbo, VXR injectors and uprated actuator (not the VXR actuator) produced 292.4 bhp and 320.1 lb ft torque on our dyno due to the less restictive charge cooler set up. Also we are able to change the injectors and remap accordingly which gives us additional fuel in reserve under extreme conditions such as track days where inlet air temps will be hotter so we have additional fuel in reserve..... Anyone on ZLET injectors on a Stage 4 will find they are maxed out at 25.3 Ms through most of the rev range.... meaning they cannot flow anymore fuel......
We're not trying to force the peak headline bhp figures as we all know that different dyno and different day will produce different results and we're not trying to suggest anyone's dyno is more or less accurate than anyone elses but
Look at the difference between the graphs i.e. the gains through the mid range. These gains can only be achieved from using bigger injectors which enable us to sustain the overboost for longer because we are not maxing out the injectors. This is where the big improvements come from in terms of on road driving........
Also look at the acceleration figures which are take from the dyno run 40 to 124.3 mph in 16.7 seconds on TMS4 vs 40-124.4 in 13.7 seconds for the CSS4...... These are from a dyno run but cannot be 'altered' as the load is pre-set.
We're happy to show these results to anyone else on their own cars.
Here are some graphs for illustration........
RED = CS4 on Courtenay Charge Cooler GREEN = CS4 map on OE Intercooler and Chargecooler set up BLUE = TMS4
Alternativly there is now MMG, just so noone can say I'm bias
Edited by Winstar, 17 April 2012 - 04:41 PM.
#4
Posted 17 April 2012 - 04:45 PM
#5
Posted 17 April 2012 - 04:47 PM
#6
Posted 17 April 2012 - 04:50 PM
#7
Posted 17 April 2012 - 04:53 PM
YesYou still on the OE IC H?

#8
Posted 17 April 2012 - 05:49 PM
#9
Posted 17 April 2012 - 05:57 PM
#10
Posted 17 April 2012 - 06:00 PM
#11
Posted 17 April 2012 - 06:17 PM
Courtney's did a VXR turbo uprated, inlet and plenhem, cool run stat and re map for around £1350.00 250BHP
Courtneys didn't reccomend the cool running stat when I had mine there.

#12
Posted 17 April 2012 - 06:45 PM
Currently I don't know. At stage 2 it was 291lbft . That was fine for best Parr of two years then the torque of the stage 3 map meant the clutch couldn't handle it anymore. The clutch had a fair amount left on it. It and the pressure plate just couldn't take it. I will get it dyno'd at some pointWhat lbs/ft Bob?
Bobby, as WS said you are nigh on stage 4 with a map.
If you're worried about the clutch etc ask CS to bring it within the boundaries you want...

#13
Posted 17 April 2012 - 06:47 PM
#14
Posted 17 April 2012 - 08:11 PM

#15
Posted 18 April 2012 - 12:15 AM
#16
Posted 18 April 2012 - 07:54 AM
#17
Posted 18 April 2012 - 08:02 AM
Courtney's did a VXR turbo uprated, inlet and plenhem, cool run stat and re map for around £1350.00 250BHP
Courtneys didn't reccomend the cool running stat when I had mine there.
Anyone know why on CS website they say don't use the cool running stat with pro alloy rad? Ive got a triple pass alloy rad (not PA) and was thinking about chucking a stat in.
#18
Posted 18 April 2012 - 09:56 AM
#19
Posted 18 April 2012 - 10:06 AM
If you've got the triple pass rad, you may need the cooler stat, as the coolant back pressure on the triple pass radiator is greater than the single pass radiators, so hence coolant flow is restricted/reduced.
So it is advised to fit one with a triple pass rad then?
#20
Posted 18 April 2012 - 11:42 AM
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