Remap

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V8 Junkie

Original Poster:

101 posts

236 months

Monday 24th July 2017
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Just received a printout of a rolling road remap on my Chimaera 500 with the canam ecu upgrade from Lloyd Specialist Developments (which they fitted in 2013) showing 299.32 Ibft and 258.36 HP at the wheels (they did not have the Dynapac rolling road when it was originally mapped ) Looking forward to picking it up on Friday

Classic Chim

12,424 posts

148 months

Tuesday 25th July 2017
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That's more fascinating than it might look.
Proper fast car.
Can you tell me has your engine been rebuilt or had other mods other than the Canams.
The reason I ask is if you look closely at my rolling road print out from Powers Performance on my Mbe equipped 4.6 Chim from 2015 you'll note the numbers are very similar.
I've had an engine rebuild at Powers on my 4.6 that basically brings it upto Taraka 5.0 spec with a bit of block decking and head skimming which gives the 4.6 a touch more power.
What these two graphs show to me is both these dyno are spot on accurate. It can't be a coincidence these numbers are so similar and it's also born out by drag times where two cars with known similar power figures did the same times down to a tenth of a second.

Here's the figures using a pencil and my eye over our two graphs and it will make it clear. Figures at the wheels

Revs 2000. 3000 4000. 5000 5800

V8 Junkie.
Hp. 92. 155. 225. 258. 245
Classic Chim
Hp. 90 150 223. 254. 245

V8 Junkie
Torque 265. 280. 299. 265. 220
Classic Chim
Torque 242. 260. 290. 260. 220

So if you overplayed our two graphs they would follow very similar curves and almost identical on the hp graph. Fascinating they can be so even if you ask me.

Having hooned around a track with 5.0 cars it also correlates that that small amount of extra torque is about a yard instant pull away from my 4.6 at lower revs then it evens out a bit,, nothing in it really.
Also our Rev limiters are both set to 5800 , the powers gone by 5500 so not a bad thing.

Those numbers are to close to be a fluke and I'm gaining more confidence in these dyno read outs as very accurate.

Here's my graph.

I can't bloody sleep, so thanks for this thread as I find these graphs tell an exact picture of truth and there's no hiding place.
Well on that day anyway.
Impressive to get those numbers many years after the Ecu install.
My AFR ratios is why I went aftermarket. Perfect line thumbup


Edited by Classic Chim on Tuesday 25th July 04:28


Edited by Classic Chim on Tuesday 25th July 04:33


Edited by Classic Chim on Tuesday 25th July 04:35


Edited by Classic Chim on Tuesday 25th July 05:02

V8 Junkie

Original Poster:

101 posts

236 months

Tuesday 25th July 2017
quotequote all
No upgrades apart from the ECU but very low mileage of 23000, uncanny the similarities,looking forward to picking up on Friday when the cold start has been has been sorted

Classic Chim

12,424 posts

148 months

Tuesday 25th July 2017
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I bet you are smile
What a great car you have there.
Enjoy and do come on here and tell us how it feels when you get it back.
This relatively new breed of Ecu and the running and living with these systems is still a black art for many and anything that highlights and makes it easier to understand must be a good thing for all us owners to read about.
Totally fascinating how close these engines are on power. My lower torque figure is to be fully expected and does show exactly where the 5.0 is mighty.
Mines done 71,000 on its original bores and pistons so you look to have a healthy future ahead.
I also have different injectors fitted from standard so just to confirm that. It's not quite standard for a 4.6 I'd say smile
Mines really fast and full of torque so I know how fast yours is, damn fast hehe
Enjoy indeed. You should be getting very healthy fuel return figures too I'd imagine 24/25 mpg no probs thumbup

V8 Junkie

Original Poster:

101 posts

236 months

Tuesday 25th July 2017
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Thank you for that Alunclaptongue outYou had me enthralled with your French adventure brave mancoolvery entertaining reading This is my 3,rd TVR the first one being a ,65 Griffith 400 289 HIPO (wish I still had that onewoohooback in the 70,s )and a ,97 Chimaera 400HC a few years ago, but this one is in a different leagueeekeek

Classic Chim

12,424 posts

148 months

Tuesday 25th July 2017
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Different league. Well put biggrin
Like riding a British air cooled twin to the south of France then having everyone treat you like royalty,,, way out there.
I can't quite believe I actually fullfilled that biking ambition. Two months before I didn't have a licence and actually made the decision over a few days looking at map a week after passing my test and two or three days before leaving for the coast and far flung places.
Stupid more like. Fortune favours the brave, sometimes.
Great fun wasn't it biglaugh
If I'd taken my iPad I could have done a proper job but on a small phone wasn't easy typing.
I found the solitude and almost silence of bike riding quite difficult at times and the release of the words each day made some sense of it and I didn't feel so alone. All the French and foreign people as well as loads of Brits kind of surrounding the bike wherever I pulled up was such a shock but became a source of great inspiration and joy. I wasn't lonely ever really and always ended up in a conversation and finishing with warm hand shakes/ embraces and kisses smile
Women like a guy on a bike I know that biggrin

I came back from France with this huge experience and wonderful feel for the Triumph and how it rode, only complaint being flat out pushing into bends and leaning allover the front wheel its slight abruptness coming back on the power was quite difficult to manage, so I just gave it a hand full and rode through it hehe nutter man.
So other than that the fuelling and throttle on the bike was very impressive to use so then getting the Tvr back with Mbe just brought a huge smile to my face as it was so similar to use, it had this perfect on off partial throttle response that finished the job nicely.
Packed a bag and was in France a 1000 miles later in the Tiv. Mad as a mad thing chasing birds at my age but oh so much fun really.
Great memory and thanks for reminding me Phil. Your Tvr with Canams will give you similar feelings come Friday that's for sure. yes

Classic Chim

12,424 posts

148 months

Tuesday 25th July 2017
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Griff 400 289 HIPO. whats that worth now. Fantastic. bow,

V8 Junkie

Original Poster:

101 posts

236 months

Sunday 30th July 2017
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Wondering if anybody has had this problem, Since buying the car from a TVR Dealer, the problem of an intermittent engine shunt developed ( loss of power and quick recovery) at about 2,500 RPM. Nothing showing up on the diagnostics,so after seeking advice from local garage who have experience of working on TVR,s they thought the problem was fuel related.

After fitting new fuel p/p, regulator and filter the problem is still there. So decided to take elsewhere to where the Canams system was fitted to fault find and have a rolling road map where it was found to have a dodgy fuel p/p connection and bad wiring was pleased that the fault was found but it has not cured the fault, as it has cost nearly 1500 pounds so far I am becoming very frustrated and my bank account does not like it lol

Has anybody had a similar problem as I understand curing an intermittent fault can be expensive and frustrating

macdeb

8,492 posts

254 months

Sunday 30th July 2017
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I'm not familiar with 'canems', but your symptoms sound similar to what I had when first fitting MS. It was like the ignition being cut off then straight back at the same revs you describe, sort of a reset but when datalogged nothing showed up. After chasing my tail it turned out to be an ECU problem as I suspected mad and when sent back and converted to direct fire it was cured.
Earthing points can cause problems too. Sorry I can't offer more as electrics is witchcraft to me. Just a thought. Good luck.

Edited by macdeb on Sunday 30th July 13:35

Classic Chim

12,424 posts

148 months

Sunday 30th July 2017
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Sounds like Ecu to me.
Do you have the resistive plug caps or have they been removed.
You really should use resistive plugs if they have.
Are you saying the cars been to a TVR specialist who installed Canams on your car and they can't find a fault yet it cuts out as described.
If fuel delivery has been discounted it can only mean ignition and instant on off is usually electrical problems.
If all wiring has been checked then you've got to start looking at Ecu as there's not a lot left to go wrong.
I'd contact Canams and ask how best the Ecu can be checked.
I'm not impressed!!!!!

Classic Chim

12,424 posts

148 months

Sunday 30th July 2017
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Has the earths inside the car been checked. I'm sure Canams use the bolt on top of the transmission tunnel left side of gearblever, hidden under carpet by dash. It has a number of wires earthing there, maybe that's at fault. But why I'm saying this I'm not at all sure.
Very depressing hearing this.

Classic Chim

12,424 posts

148 months

Sunday 30th July 2017
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Also if your Ecu wiring is running close to big feed cables it can cause interference with the Ecu operation. I'm sure my friend emended the Canams wiring loom as this caused a problem on his car,,, thinking about it now it was that and keeping that wiring away from other wiring that solved an interference issue for him.
I'd speak to LLOYDS as they are the reputed TVR specialist who offers and knows these Ecu and must have had this issue arise before as my mate def had a problem and this was only Jan/March last year and he spoke with them over it. He was installing the Ecu himself.

V8 Junkie

Original Poster:

101 posts

236 months

Sunday 30th July 2017
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Thanks for the replies. After only having the car since the beginning of June paying 25,000 thinking you get what you pay for, so go for the best has not worked out.
I am having to fall back on my ,65 289 Mustang for my trip up to the Morgan factory ,old tech 15 mpg 600 rpm idle which sounds great,,but has never missed a beat in the 4 years of ownership and when weighing up the cost,s on spent so far on trying to sort out the problem on the TVR and still not sorted what is so good about engine management system,s

I have had a couple of P6 3500 Rover,s running on Carb,s no problem,s until Lucas got invovled with the SDI say no more..Sorry about the rant but needed a few beer,s and to vent because after spending nearly 1500 pound,s and still being in the same state that I was in originally I am fed up

N7GTX

7,822 posts

142 months

Sunday 30th July 2017
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Can't believe that 2 garages have taken £1,500 from you yet the fault is still there. I am struggling to understand why one or both thought it was fuel related. If it was fuel starvation then it would happen after 2,500, not just at that point surely? If it is only happening at this point then as others have said, this must be an ECU problem. While earths and interference will give all sorts of random faults, I find myself coming back to the ECU having an internal fault as a bad earth would give completely random failures.
I would be calling the company directly for advice as they may have come across this before. I am sure they would want to maintain their reputation and will give you help.

http://www.canems.co.uk/contact.php

plfrench

2,296 posts

267 months

Sunday 30th July 2017
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Sorry, can't be of any help, hope you get fixed sorted soon, but just had to compliment you on a great selection of cars in your garage! You certainly live up to your username thumbup

Sardonicus

18,928 posts

220 months

Sunday 30th July 2017
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Find somone that knows what they are doing rather than knowing how to take your money

Classic Chim

12,424 posts

148 months

Sunday 30th July 2017
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Sardonicus said:
Find somone that knows what they are doing rather than knowing how to take your money
Thank fucjpk someone's talking sense.
Utter disgrace this is.

KateV8

448 posts

151 months

Monday 31st July 2017
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I once had this on Canems (since moved on to MBE) and it was traced to a poor quality mounting bracket for the crank sensor. It was allowing vibration to affect the pick up from the trigger wheel and was cured by fitting a heavier bracket although I believe the sensor gap could also be a problem. Funnily enough the only time the car has ever 'failed to proceed' was down to the Lloyds supplied crank sensor which packed in altogether two years after fitment. I am all too familiar with the concept of 'big bills for little knowledge' and am much wiser now for the experience. Powers and X-Works have never let me down.

KateV8

448 posts

151 months

Monday 31st July 2017
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Edited for a little more detail;
On our car the fault occurred at higher revs than yours, around 3500rpm but that was a result of a natural resonance occuring at that point in that particular engine, other engines will resonate at different frequencies at different speeds. The 'cut', when it came, felt hard and sudden. Which it would, if the trigger wheel loses it's place then the ecu won't send a signal to fire the plugs. Sorry you've had this experience, some bad luck there.

V8 Junkie

Original Poster:

101 posts

236 months

Monday 31st July 2017
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Thank you for that information Mark . Will be getting in touch this morning,as soon as they open because the problem is getting worse the car is very untrustworthy. Had a nightmare journey home to Dover (6 hours} from them on Friday with the car misbehaving and car park motorways lol