Discussion
Alright all,
Went on the ACT site after reading the plenum post, I wish I hadn't, I want it all, but anyway, what exactly are these Tornado chips? What benefits do they give in the way of engine performance? At present my car seems to be a very well sorted 4 litre, I have no shunting problem, runs quite happily at 35 mph in fifth, and she starts first time whether stone cold or red hot. I'm just after better throttle control, when going into corners and lifting off the throttle rather than decelerating quickly, she seems to run on and you have to brake.
If these chips don't give me this control, which of the other goodies or combination of goodies might sort the problem
Cheers Mark
Went on the ACT site after reading the plenum post, I wish I hadn't, I want it all, but anyway, what exactly are these Tornado chips? What benefits do they give in the way of engine performance? At present my car seems to be a very well sorted 4 litre, I have no shunting problem, runs quite happily at 35 mph in fifth, and she starts first time whether stone cold or red hot. I'm just after better throttle control, when going into corners and lifting off the throttle rather than decelerating quickly, she seems to run on and you have to brake.
If these chips don't give me this control, which of the other goodies or combination of goodies might sort the problem
Cheers Mark
Speak to a Joolz of Kits and classics fame.
Sounds like you have a good map so fine tune that one as I don’t think a best guess map will necessarily work as Joolz is more guaranteed to get the best out of your car I’d have thought.
Each engine will be in its own particular state of tune via age wear etc so putting a chip in that will be based on a strong motor ( most likely) raises ?
Far better to get your car bespoke tuned by the best CUX man out there ( most likely ) and a fine chap ta boot
And you have the added benefit of Joolz checking everything’s working properly too before he does anything.
Money well spent.
Sounds like you have a good map so fine tune that one as I don’t think a best guess map will necessarily work as Joolz is more guaranteed to get the best out of your car I’d have thought.
Each engine will be in its own particular state of tune via age wear etc so putting a chip in that will be based on a strong motor ( most likely) raises ?
Far better to get your car bespoke tuned by the best CUX man out there ( most likely ) and a fine chap ta boot
And you have the added benefit of Joolz checking everything’s working properly too before he does anything.
Money well spent.
Edited by Classic Chim on Tuesday 14th November 21:49
Litcoat said:
How far down south is he? I'm on the England/Scotland border, I don't mind travelling but there is a limit.
Cheers Mark
Yeah I can see your point. Cheers Mark
Chesterfield so not to far for a good old cruise
It’s a difficult one as there’s no guarantee a car will run welll weeks after some works been done but getting the car firstly checked over by someone like Joolz then rolling road mapped (if necessary) as he has his own rolling road to fine tune your car, if your only real problem is on overrun it sounds like a component issue but Joolz will know pretty smartly, that might be mapped out without using the rolling road so I’d at least talk to him for his opinion.
The Tornado chip has a good rep
But it’s a guess rather than an actual calibration on your car.
First thing- the TVR mapping in the ECU is already optimised for the 14CUX, please dont believe that TVR would have missed easy horsepower due to a bad map? Anyway back to back tests done on TVR map versus Tornado show no improvement in power or MPG. Now this is all based on the engine when it leaves the factory, and things change over time, so a custom remap can dial out these changes and re optimise the fueling, something a best guess map will never do. Another factor is if you have catalysts, the ECU trims the fuel mixture even if the map is not quite correct, and if you car runs well, id leave it alone. Huge gains in HP with a remap, means either something is wrong with a sensor, or the engine is different to when it left the factory. If you want to play around with mapping, there are a reasonable number of maps available FOC from Steve sprints web site with lots of nice little tweaks, that just need blowing into a £2 Eprom:
http://www.remap-14cux.uk/bins/
£450 for an aftermarket chip with no proven gains is daylight robbery.
http://www.remap-14cux.uk/bins/
£450 for an aftermarket chip with no proven gains is daylight robbery.
Litcoat said:
......... I'm just after better throttle control, when going into corners and lifting off the throttle rather than decelerating quickly, she seems to run on and you have to brake..........
The ECU is mapped to hold the revs up to about 1200rpm on a trailing throttle. The ECU will hold those revs until you come to a standstill then drop the revs to a 900ish idle. This is a crude anti stall function.Is this what you are referring too?
Steve
Steve_D said:
Litcoat said:
......... I'm just after better throttle control, when going into corners and lifting off the throttle rather than decelerating quickly, she seems to run on and you have to brake..........
The ECU is mapped to hold the revs up to about 1200rpm on a trailing throttle. The ECU will hold those revs until you come to a standstill then drop the revs to a 900ish idle. This is a crude anti stall function.Is this what you are referring too?
Steve
Litcoat said:
Alright all,
.... I'm just after better throttle control, when going into corners and lifting off the throttle rather than decelerating quickly, she seems to run on and you have to brake.....
As an aside, I added a Plenum Spacer to my 500 around 2 years ago and it made a massive difference in smoothness coming off throttle.. I do appreciate that not everyone is convinced about the benefit of the spacer but I think it's a very valuable modfication. .... I'm just after better throttle control, when going into corners and lifting off the throttle rather than decelerating quickly, she seems to run on and you have to brake.....
JimTC said:
As an aside, I added a Plenum Spacer to my 500 around 2 years ago and it made a massive difference in smoothness coming off throttle.. I do appreciate that not everyone is convinced about the benefit of the spacer but I think it's a very valuable modfication.
Anything you do to increase the volume of air between the open mouths of the velocity stacks and the inner roof of the plenum will have the effect of reducing the issue of cylinder to cylinder charge robbing, this is why the plenum spacer works, however, while noticeable... it's improvements are not huge.The engineers working on the Rover V8 engine towards the end of it's life understood all this very well, their ultimate solution was not to increase the volume of air but to address the issue properly by creating two plenums and divide the cylinders, the objective being to completely eliminate the undesirable effects of charge robbing permanently .
Enter the Thor inlet manifold....
Much play is made of it's long runners and how this might not suit a TVR, but that's completely missing the underlying point of it's design, long or short runners the effect of separation and twin plenums would be the same.....better drivability! It's just they happened to choose a long runner design because the application (Range Rover / Discovery) demanded low end torque.
A short runner Thor therefore could be just the thing for a RV8 TVR
blitzracing said:
Just a thought- does the idle drop rapidly as you come to a stop, or does it take a while? It may be that the raised idle is being held because the throttle pot is out of adjustment. The feeling that the car is not slowing as it should is not normal whatever chip.
My thoughts.....quick trip to your TVR specialist is called for
Everything else seems normal on the car, I'll take it across to the HHC at Hexham and see what they think, I keep getting under the bonnet to do a bit of tinkering after reading the posts you lads put up then I see all the pipes and cables and chicken out, too expensive if I cock it up.
Gassing Station | Chimaera | Top of Page | What's New | My Stuff