Solid Pipes & BoV mod
Discussion
Thanks to the link on another thread to their dyno video, I spotted the mods they have for sale :
www.horsepowerhouse.com/noble/nupgrade.htm
Wish uk tuners would put stuff up on the web. So much easier to sell it!
Seems they have a bigger rad, bov, solid pipes and ecu mod.
As an aside it looks like they supplied that orange car we saw for sale on that US web site a couple of weeks back.
alex s said:
Just looked at their site, video clip on dyno shows 373 hp at rear wheels!!
Going to give them a call, will find out postage cost - I like the pipe kit. will let you know.
Is that at rear wheels or inferred at the crank? Also they are using rollers so huge margin for error.
alex s said:
assume rear wheels. tried to call, but east coast number is coming up as disconected. have emailed asking for details. Sorry for being thick, why is there a huge margin with rollers? what are the alternatives?
Well engine dynos most accurate except that often they don't use the correct induction and exhaust setup which distorts figures. Roller dyno readings can be buggered up just by having off spec tyre pressures, or by running in the wrong gear.A lot of US dynos attach to the wheel hub directly which does at least remove tyre inflation/traction from the equation. Its way too easy to get the result you want to see with almost all this kit... All they are really useful for is a head to head comparison on the same day as a relative comparison.
alex s said:
Just looked at their site, video clip on dyno shows 373 hp at rear wheels!!
Going to give them a call, will find out postage cost - I like the pipe kit. will let you know.
That 373bhp would have to be a flywheel figure (estimated of course).
They cannot gain more than about 30bhp with those modifications unless the ECU is allowing more boost.
I would not be surprised if the 373 HP figure is indeed at the rear wheels. I have been a passenger at a track event in the US in a Stage III Noble that HH prepared, and the performance is awesome. Note that the charge cooler volume and efficiency increases are significant. Add those to the re-programed ECU that allows about 1.2 bar boost, and you end up with big gains in HP at the flywheel and rear wheels.
Cheers, Joel
>> Edited by JLSELAN on Tuesday 14th December 18:29
Cheers, Joel
>> Edited by JLSELAN on Tuesday 14th December 18:29
matt_t16 said:
Just out of interest how many people would be interested in a UK source for HPH and similar modifications?
Matt
Depends on prices I guess. The exchange rate makes it look particularly attractive at the moment.
There are more places than John Noble motorsport who can tune the car at the moment. Its not a big deal buying a new ECU, its not even particularly expensive...
Its commendable though that US places can pull their fingers out with this stuff when they have a tiny number of cars out there, yet in the UK its a nightmare finding people who can mod the car and the pricing is pretty prohibitive. 1000+vat quid for a new intercooler (fitted) in the UK is pretty steep imho.
I'm a tad sceptical about a larger intercooler anyway, as it will likely have more resistance to airflow and if it is insufficient it won't do much good...
DanH said:
I'm a tad sceptical about a larger intercooler anyway, as it will likely have more resistance to airflow and if it is insufficient it won't do much good...
Nearly all intercoolers operate primarily as heat sinks as such a larger intercooler with a greater thermal mass will provide the same or greater level of cooling for a longer period of time before reaching its saturation point. Think of it this way the charge air isn't cooled by direct air to air contact, the heat from the charge is absorbed by the aluminium of the IC core, the IC core is then cooled by the flow of air passing through it, hence even an IC core with poor airflow to the core will still provide good charge cooling capability up until its saturation point.
The only downside to an IC of much larger capacity would be a slight loss of throttle response - although this is likely to be negligible at best.
Matt
>> Edited by matt_t16 on Tuesday 14th December 19:45
I've never seen a rolling road that doesn't give the BHP figure at the wheels. To work out the figure at the crank you have to facter in a lot of variables, (making it an educated guess at best), and I've never come across an RR that can do it.
I wait to be shot down in flames!
Martin.
PS - Matt, if you've got something going next August I'll be there.
I wait to be shot down in flames!
Martin.
PS - Matt, if you've got something going next August I'll be there.
Surely an intercooler doesn't need larger internal volume to have better heat dissipitation. Could just have larger fins etc.
My point though, is that the intercooler doesn't really get as much air through it as one would like on the noble, so making it more resistant to airflow could make things worse once you hit thermal saturation. I can't see the point in buying a new one purely as a heat sink. On a front engined car its just a totally different kettle of fish because you really can get a lot more air over it.
V6GTO said:
I've never seen a rolling road that doesn't give the BHP figure at the wheels. To work out the figure at the crank you have to facter in a lot of variables, (making it an educated guess at best), and I've never come across an RR that can do it.
I wait to be shot down in flames!
Martin.
PS - Matt, if you've got something going next August I'll be there.
Nah they can do it using coast down losses calcs. Its reasonably accurate but all these things are subject to the machines calibration, the operators skill and how much they want to please the customer as well as the inate inacurracy...
Alex, the ecu may be locked but you can buy a new one from the manufacturer for not very much in the scheme of things, which won't be locked. Mapping software isn't expensive for it either.
V6GTO said:All I've seen have been the opposite, why, because the "crank" one is bigger!
I've never seen a rolling road that doesn't give the BHP figure at the wheels. To work out the figure at the crank you have to facter in a lot of variables, (making it an educated guess at best), and I've never come across an RR that can do it.
I wait to be shot down in flames!
Martin.
See this article... (a link I've put on here for about the 5th time!)
www.pumaracing.co.uk/coastdwn.htm
I'd suspect that the 373 on that video is "estimated crank" - why - well in the bottom of the screen is "simulated interia" which sounds like they are adding the "coastdown" losses to the "at the wheel" figure to get the crank... Add to that it has a "power @" under the Vehicle Simulation part and I'd bet my money that it's doing some maths.
It's also interesting to note that on that video they have a *sodding* great big fan on the intercooler..... that'll make quite a bit of difference compared to the car on the road!
The key is what was it at the wheel. The plots that came with my car (normal and upgraded) showed both so you could actually do some real comparisons.
J
>> Edited by joust on Tuesday 14th December 21:16
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