Discussion
storm grey said:
thinking of getting a tornado chip to try and stop my car from shunting and hopefully make it nicer to drive how many of you have done this and is it worth it and easy to do.
How much is one of those? Take it to Joolz, might work out cheaper and a more bespoke fit so to speak.
He can re map your CUX so you get a map and new chip specific to your engines needs rather than a generic one.
Edited by Classic Chim on Thursday 28th March 20:46
If you have a shunting issue there's something wrong. Try and find what it is first.
When I bought mine it had an issue with shunting I replaced most other the consumables in the ignition system, dizzy cap, plugs, rotar arm leads and the plug extenders ( now ditched all together) it ran much better after all that. The clacked extenders was the biggest issue on mine. You could actually see the spark arcing from them in the dark.
When I bought mine it had an issue with shunting I replaced most other the consumables in the ignition system, dizzy cap, plugs, rotar arm leads and the plug extenders ( now ditched all together) it ran much better after all that. The clacked extenders was the biggest issue on mine. You could actually see the spark arcing from them in the dark.
Look for a company called Kits and Classics.
Joolz maps cux and after market Ecu including turbo charged Tvr running Emerald Ecu and a thoughouly decent chap too.
All I’m saying is a a bespoke mapping session will be a more guaranteed way to get the characteristics your after but shunting does come from a few areas so do consider other things from engine mounts to Dif and everything in between first.
If your car otherwise runs well bar the lower rev area i’d first identify what cam is fitted if possible.
What engine size do you have?
Joolz maps cux and after market Ecu including turbo charged Tvr running Emerald Ecu and a thoughouly decent chap too.
All I’m saying is a a bespoke mapping session will be a more guaranteed way to get the characteristics your after but shunting does come from a few areas so do consider other things from engine mounts to Dif and everything in between first.
If your car otherwise runs well bar the lower rev area i’d first identify what cam is fitted if possible.
What engine size do you have?
storm grey said:
4.0 its got all new leads coil rotor arm plugs ect.
When it comes to this kind of thing someone like Joolz at Kits and Classics will be honest with you and if it’s anything other than mapping related he can diagnose it, if he feels he can improve it on the dyno then you can have a mapping session as he has his own rolling road . If it’s gearbox/ Dif etc related no mapping can overcome loose transmission but Joolz knows these cars inside out and will appraise it before doing a thing.
He’s one of the good ones for sure
A combination of new Ecu so new map and new Dif cured my shunt.
Joolz is one of the few in the Tvr world who can map the cux so he would be my go to man on this personally.
My view is a chip with a map for a similar engine as yours might be an improvement but unless it’s actually a chip tuned on your car it’s whats called a best guess map!
The only way you can get a bespoke map is by mapping your car.
Joolz might decide it doesn’t need it but he will be honest thats all I know.
Classic Chim said:
Joolz at Kits and Classics will be honest with you and if it’s anything other than mapping related he can diagnose it,
+1 Joolz- I’ve been to him twice to reprogram my 14CUX once to map when I installed my ported heads and again the turbo. He’s an honest and upstanding bloke who knows his stuff. Why would you use fuel settings based on another car? IMO Forget the tornado chip it’s an generic chip based on a car that’s not yours.
Edited by ITVRI on Friday 29th March 11:29
ITVRI said:
Why would you use fuel settings based on another car? IMO Forget the tornado chip it’s an generic chip based on a car that’s not yours.
Why blow hundreds of ££££££££££££ on somthing that was not tuned to your car?
Get it to someone that knows what they are doing (joolz) and get YOUR car the best it can be
Joolz has done 2 jobs for me
1 remap the 14 after some bits and bobs had been done 100% better
2 rip all the 14 stuff out and replaced it with the Emrald ecu
Top man to deal with
rather than a generic tune on that Tornado chip 
The best value for money to deliver the best end results on a Chimaera long before you go changing anything to do with fueling is to give the car a good old fashioned tune up, a special focus on the ignition side should be your starting point.
Incorrect ignition timing, fried HT leads, dodgy plug extenders, fouled too cold no7 heat range shrouded electrode plugs plugs TVR chose, iffy quality new rotor arms, distributor cap tracking, poor connections at the coil ect ect will all make the car run poorly, if you've got a few faults which is very common they soon add up to a car that shunts and hunts like a pig.
The process for setting and the measurements for throttle butterfly rest gap, base idle adjustment, setting the TPS correctly ect ect can all be found in the Range Rover factory workshop manual. On a TVR improving engine earthing can make a massive improvement, vacuum leaks are super common too and must be completely eliminated for the engine to run correctly.
Finally removing the cats which are an exhaust restriction and switching the vac advance to full manifold vacuum to idle at 18 degrees will both give benefits to idle quality, drivability and will reduce component frying under bonnet temperatures dramatically.
Lets face it if the engine isn't running at its absolute best in the first place, you really can't expect a good result out of some minor tweaks to the fueling, so my best advice is to start with the basics first and you'll almost certainly find the engine will run massively better without any mapping/chipping needed.
Incorrect ignition timing, fried HT leads, dodgy plug extenders, fouled too cold no7 heat range shrouded electrode plugs plugs TVR chose, iffy quality new rotor arms, distributor cap tracking, poor connections at the coil ect ect will all make the car run poorly, if you've got a few faults which is very common they soon add up to a car that shunts and hunts like a pig.
The process for setting and the measurements for throttle butterfly rest gap, base idle adjustment, setting the TPS correctly ect ect can all be found in the Range Rover factory workshop manual. On a TVR improving engine earthing can make a massive improvement, vacuum leaks are super common too and must be completely eliminated for the engine to run correctly.
Finally removing the cats which are an exhaust restriction and switching the vac advance to full manifold vacuum to idle at 18 degrees will both give benefits to idle quality, drivability and will reduce component frying under bonnet temperatures dramatically.
Lets face it if the engine isn't running at its absolute best in the first place, you really can't expect a good result out of some minor tweaks to the fueling, so my best advice is to start with the basics first and you'll almost certainly find the engine will run massively better without any mapping/chipping needed.
The answer to the best kept secret is Chesterfield, just off the M1 in north Derbyshire.
But he doesn't charge a huge amount and when he has remapped mine it is done in a couple of hours on his in house rolling road.
But call him first to confirm this.
http://www.kitsandclassics.co.uk/Contact-Us-/-Work...
Try calling early/middle/late, ie at natural break times, as he won't answer the phone when he has a car on the rolling road.
If unlucky leave a message - he will get back to you.
But he doesn't charge a huge amount and when he has remapped mine it is done in a couple of hours on his in house rolling road.
But call him first to confirm this.
http://www.kitsandclassics.co.uk/Contact-Us-/-Work...
Try calling early/middle/late, ie at natural break times, as he won't answer the phone when he has a car on the rolling road.
If unlucky leave a message - he will get back to you.
You have a fundamental issue with the 14CUX with catalysts in that the ECU will always try and clamp the mixture slightly leaner than suits the RV8, and this is one reason tuned TVR motors tend to shunt if things are slightly off tune. There are NO catalyst based maps that will miraculously fix shunting on their own, and the video Ive seen of "look this Tornado chip runs perfectly" also involves boosting the fuel pressure that will make the mixture richer- its completely the wrong approach- why would you sell a remap the frig the fuel pressure as well ?? I think its a brutal way and very expensive way of forcing more fuel into the engine that can mask shunting, but if you want to do that just get Jools to do a green non catalyst map for you, but it wont pass emission testing. The green map gives you a lot more scope to get the fuel as the engine needs it, but I've yet to see if running the green non catalyst map will cook the catalysts- personally I doubt it, but I've not tested it. If the catalysts can cope with the green map, then you can just put a switchable tune resistor under the dash, and switch between the best running green map and the catalyst map at MOT time. I dont know if Jools has tried this.
Honestly I'd toss the 14cux in the bin and go MS3X. Im about to do my second install, and when i swapped the 4cu on my 390se for MS2 it was a total revelation.
If you're not quite that adventurous, a rolling road session beats an off-the-peg chip every day of the week. I would also like to reaffirm that if you map an engine with a vacuum leak or other tuning fault,you will just end up mapping it again once the fault has been cured. Don't take an engine to the rollers unless fuelling and spark timing are the only things it needs.
Ed.
If you're not quite that adventurous, a rolling road session beats an off-the-peg chip every day of the week. I would also like to reaffirm that if you map an engine with a vacuum leak or other tuning fault,you will just end up mapping it again once the fault has been cured. Don't take an engine to the rollers unless fuelling and spark timing are the only things it needs.
Ed.
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