Austec Speed 5 mapping results from a 3.6

[Mr Freefall]

So, the day comes when I have seen what my car really does. This is my 4th TVR, having had a Chimera, Tuscan Red Rose, Tamora and now the T350C. After a 2-hour drive I arrive at Austec and its damp and cold. I didn’t know what to expect on the day, but I have always been very aware of the TVR stated power figures to the actual results. Paul meets me in the office and takes my keys, the start of a very long day. Next I hear my car start and it’s promptly put on the rollers. After checking all the fluids, and strapping the car down, Paul tells me this is where we see how good a starting point we have, its first rolling road run.

Now, my car has been de-catted, has a sports exhaust, the TVR POWER DECATT CHIP, and I have to say laughably loud, but to stand behind the car and listing to it go through the rev range was, well, deafening. Paul was very good and let me watch from the sideline as the first runs proceed to warm the car up, then on the third attempt, he nails it. I watch the dyno read out and wait with baited breath…

306.9 max BPH… I stand there a very disappointed TVR owner. I know that some power figures are down, but 45 BHP is a big difference from the acclaimed 350 from the 3.6 speed 6, and my heart sank. Paul gets out of the car with a smile, and I stand there thinking ‘Paul, that’s not good, why you smiling’.

Well, THAT’S AT THE WHEELS. It’s actually 358.8 BHP. So a good start.

Next Mark Adams come along, talks me through a few things and plug his laptop in. After a few runs they are not very happy, seems there is something wrong with the parameters on the TVR software reading from my car. They have a look and agree that is might need injector cleaning.

Mark spots something; one of the injectors had a different colour collet, very interesting. They get tested for the atomising spray pattern and the flow rate. One of the injectors has a different spray pattern and is down on the flow rate quite a lot. It turns out that one off the injectors is a different model number and not one of the set, so the car will never run correctly. Now I cannot state that TVR built the engine like this, as I am the second owner, I will have to check with my dealer to see if they ever changed an injector, but I have a feeling I know what the answer will be…

Now what do we do, no point carrying on. Paul does not have these injectors in stock, so I’m stuffed. So what does Paul do, he only pulls his own Tamora in, removes all his injectors, cleans them checks them for spray pattern, flow rate, and out of the 11 injectors from both cars, gives me 6 matching ones to go into my car. What a top bloke, I didn’t ask for this, he just did it. Thinking now as I type this you realise what he has just done for me.

Paul and Mark let me watch, explained everything that they are doing and go about their business. I have one small fault which seems to he HT lead failure when the car is under a heavy load misses a beat at the top. What you will also see is the way the power pattern has been bought earlier on in the rev band, which makes for a totally different driving car. So my final figures are 375.2 BHP at the flywheel with 355.3 lb of torque. The last bit impresses me, that car has more torque than a stock 3.6 speed 6 has BHP…

A top day, and lots of thanks to Paul and Mark Adams, for spending so long on my car, I have a couple of bits I want to do to it, get the HT leads and a K&N filter for starters, that should smooth the top map and may increase the power curve to 380 BHP.

When you look at this now, how long will it be before there is 400 BHP from the 3.6?

There should be a graph below here in the box to show the results...

[HarryW]

Good report always enjoy reading a happy story.
Top man award to Paul for sorting out the injectors using his own car, well his misses car hopefully she doesn't read PH .

Harry

[luca brazzi]

Fascinating. If you don't mind, what was the cost?

LB

[targarama]

>> Edited by targarama on Tuesday 1st March 16:22

[Mr Freefall]

luca brazzi said:

Fascinating. If you don't mind, what was the cost? LB

£750+vat for the chip and remapping, then the odds and sods I had done, like injector cleaninig, throttle pod sendor unit, new plugs. So for £1k I have a Red Rose Power 3.6 engine. Not bad I would say...

Paul has some other things going in like different injectors, K&N Filter, carbon fibre trumpets, but there not tested yet so I dont think they are release yet. But Speak to Paul, he will tell all...

Mr F

[washy]

Good stuff. Be great to see what a 4 litre 'S' engine is capable of?!

[HarryW]

Whats happening to the torque higher up the rev range, you seem to have gained lower down torque but seem to have lost it from a big step post 5Krpm though.

Harry

[nubbin]

If my car were to echo these results, I would gain nearly 80lbs. ft. of torque! - that's an extra 29%, plus 11% more BHP. That has got to be worth £1000!

Thanks, Gary, I enjoyed talking to you before you went on holiday. I haven't booked in yet because of the logistics of running down to Surrey from Sheffield, but I'll try to get in there before Megahoon!

[chris watton]

Excellent post ,

But now this means I MUST have this done at some point!!! , God dammit!!! lol

[tail slide]

Very illuminating - thanks for sharing the full details with us all. Mark's worked his magic on my other car, told me the plan & were hopeful of good results a few weeks ago; didn't know it was yours. My T350 will definitely be joining the Q with this level of gain per £ !

A thought - how many miles has yours done, as this type of engine produce rather more as miles increase?


>> Edited by tail slide on Tuesday 1st March 18:54

[Mr Freefall]

tail slide said:

Very illuminating - thanks for sharing the full details with us all. Mark's worked his magic on my other car, told me the plan & were hopeful of good results a few weeks ago; didn't know it was yours. My T350 will definitely be joining the Q with this level of gain per £ ! A thought - how many miles has yours done, as this type of engine produce rather more as miles increase? >> Edited by tail slide on Tuesday 1st March 18:54

At the time it was 10750 miles... If anyone can host the jpg file of the graph I can get the original post looking better too.

Mr F

[Mr Freefall]

HarryW said:

Whats happening to the torque higher up the rev range, you seem to have gained lower down torque but seem to have lost it from a big step post 5Krpm though. Harry

The torque tails off and the BHP takes over. The Torque give you better driverbility al lower reves, and at 5000 shouldn't it all be about BHP?

Mr F

[joospeed]

are you sure those graphs are both from your car, they seem to make no sense whatsoever .. mind you a gain is a gain is a gain, can only make the car go faster

[Mr Freefall]

Why no sense Jools?

Mr F

[GreenV8S]

I can't make sense of them either. It's the way the before/after torque curves cross, but the before/after power curves don't, that confuses me. If the axes are all the same, that can't happen.

[maddog-uk]

Met Paul on the TVRCC club run down south and he told me to bring my Tamora over one day! I think I will as I am curious to get some real data from it!

Thanks for inspiring me!

[rods]

Nice one Gary,are you on vmax?
do you expect to see an increased top end speed?

rob

[Mr Freefall]

rods said:

Nice one Gary,are you on vmax? do you expect to see an increased top end speed? rob

Hi Rob I will be, I still have the video of your 180mph run on tape, but I cannot for the life of me get it transfered, so If you know someone who can I will give you the DV tape.

See you on the day, I might get the same sort of speed that you had on the day I hope (from the RR 350)

Gary

[Mr Freefall]

GreenV8S said:

I can't make sense of them either. It's the way the before/after torque curves cross, but the before/after power curves don't, that confuses me. If the axes are all the same, that can't happen.

That might be down to my HT lead failure is was getting under load that led to the torque fall off. Remeber too that I have had to 'Blue Peter' the graphs together, but the axis were the same when I overlayed them.

I will get the magnecors on, wait for the K&N filter, then have a new dyno session and you may see the torque curve you are looking for on that run. Paul does not carry HT leads, so I could not change them on the day

Mr F

[nubbin]

Mr Freefall said:

If anyone can host the jpg file of the graph I can get the original post looking better too. Mr F

E-mail it to me Gary and I'll stick it on my website next to mine, so people can compare them.

Or e-mail the two separate graphs for a better comparison

>> Edited by nubbin on Wednesday 2nd March 09:57