Dyno Day 2
- Thread starter twinny
- Start date
The max. torque figure is very slightly up and occurs further up the power band now. There is a small flat spot (dip in both bhp and torque curves) around 4000 rpm against the original figures, but I have emailed my charts to Steve Wong and he is confident that he can smooth these out when he re-maps the AFR with the custom chip.
In the "backside" dyno the car really pulls strong now and above 5000rpm the torque keeps going whereas before it dropped away quite a bit. The chart reflects this as well.
Steve
In the "backside" dyno the car really pulls strong now and above 5000rpm the torque keeps going whereas before it dropped away quite a bit. The chart reflects this as well.
Steve
Guest
New member
Those are some great curves guys - for essentially std engines. The peak torque on 911MOT's curve is one of the highest I have seen. Higher than mine on my last 260hp run, though the Supercup cams make a much flatter torque curve so the area under it is still larger. Its interesting that the peak power on all the posted graphs seems to be a little higher than the last set of 3.2 graphs posted - more like 5900-6000rpm. Some of the other 3.2s show peak power as low as 5300rpm. I wonder if the cam timing is a little different from engine to engine? Anyone know what the factory peak power rpms are? I think getting the cam timing on my car right made a lot of the difference, so anyone who seems to be down on power after a dyno pull should get the cam timing checked at their next service (if they care!). The chains do stretch and the sprockets will wear over time.
I think its fantastic that an exhaust and custom chip can get you close to 250hp on an internally standard 3.2. Great job guys.
RB
PS - I will be sure to let you know when I hit 270hp !
I think its fantastic that an exhaust and custom chip can get you close to 250hp on an internally standard 3.2. Great job guys.
RB
PS - I will be sure to let you know when I hit 270hp !
IanHighfield
New member
Steve,
Thanks for sorting out Sunday - an enjoyable afternoon.
My V2 chip wasn't as good as the V1, and SW reckons I should run with that as it is as good as I will get without constant tweeking.
Your graphs are the same 'shape' as mine, so I guess that SW Chip will see both lines 'lifted' up a couple of squares on the graph. See my attached run of the 256bhp and 240ft/lbs torque. Given you are starting from ~5bhp more with your exhaust, it will be interesting to see if the chip makes 260bhp for you !
Thanks for sorting out Sunday - an enjoyable afternoon.
My V2 chip wasn't as good as the V1, and SW reckons I should run with that as it is as good as I will get without constant tweeking.
Your graphs are the same 'shape' as mine, so I guess that SW Chip will see both lines 'lifted' up a couple of squares on the graph. See my attached run of the 256bhp and 240ft/lbs torque. Given you are starting from ~5bhp more with your exhaust, it will be interesting to see if the chip makes 260bhp for you !
IanHighfield
New member
Hi Richard,
SW was dissappointed with my V2 chip, but now believes he is getting a handle on the Weltmeister readings in general, and feels the AFR may be reading a little differently to the 'real' numbers on Lambda. Although my V2 chip made the same 256bhp, it was down on bhp and torque right until it peaked at ~6000rpm - i.e. he raised the power there but killed it low down. He has told me to stick with V1, as 256bhp and 240ft/lbs are great numbers - it is the torque number I am most pleased with really.
The 911 book by Paul Frere shows peak power at ~5,750rpm.
Steve Murley
New member
Twinny,
Thanks for organising Sunday, My SW chip not available yet, but should be in place by the next Dyno day,
If I hadn't seen it with my own eyes I would never believe you would have got such a big rise in BHP by bolting on a bake bean can as an exhaust system[
], well done a great purchase.
Adrian, great figures for your car as well, some people are certainly raising the bar now. The SW chips are proving there worth as well.
Thanks for organising Sunday, My SW chip not available yet, but should be in place by the next Dyno day,
If I hadn't seen it with my own eyes I would never believe you would have got such a big rise in BHP by bolting on a bake bean can as an exhaust system[
], well done a great purchase.Adrian, great figures for your car as well, some people are certainly raising the bar now. The SW chips are proving there worth as well.
Steve - Do I detect a faint hint or sour grapes here?
I think Ian at Hayward & Scott would consider that quite a lot of time and money has gone into research before actually selecting which brand of baked beans and therefore by definition, which tin is best suited to the job.
I'm told the real skill though comes in steaming off the label first so they don't leave any tell-tale glue behind which could be analysed thus identifying the tin's source (or should that be sauce!)
Steve
I think Ian at Hayward & Scott would consider that quite a lot of time and money has gone into research before actually selecting which brand of baked beans and therefore by definition, which tin is best suited to the job.
I'm told the real skill though comes in steaming off the label first so they don't leave any tell-tale glue behind which could be analysed thus identifying the tin's source (or should that be sauce!)
Steve
Steve Murley
New member
Just teasing Twinny,
I am in fact very impressed with your Hayward & Scott system, its produced more than twice the BHP improvement I would have expected, also it sounded brilliant. I was hoping my half Zymol
polished bonnet might have produced and extra HP or 2 [](in house joke for others on the forum wondering what I am on about)
I am in fact very impressed with your Hayward & Scott system, its produced more than twice the BHP improvement I would have expected, also it sounded brilliant. I was hoping my half Zymol
polished bonnet might have produced and extra HP or 2 [
](in house joke for others on the forum wondering what I am on about)
Hi Steve, as a matter of interest how much roughly did the system cost, in particular the cross over and pre silencer pieces - when I purchased mine it came with a 80mm SS twin outlet backbox the make of which is still a mystery, so it might be worth me updating those other exhaust elements
Cheers
Cheers
Steve, I know I know!.... maybe you and I can get Weltmeisters to do a quick dyno session for us when our SW chips are in. Steve was programming mine last night and thought that it should only take about 10 days to deliver.
I thought that Zymol wax should have made you an extra 2bhp plus tea and cakes whilst we were waiting it's that good!
Let me know.
Steve
I thought that Zymol wax should have made you an extra 2bhp plus tea and cakes whilst we were waiting it's that good!
Let me know.
Steve
Guest
New member
Yes, that torque number is the best I have seen for any 3.2. It's much higher than my peak, though you can see that mine goes flat from about 4700rpm all the way to 6200rpm, and its only by 6600rpm that it really drops off the map. You are also above 200FtLbs all the way from 2700rpm on. The cams seem to be giving 300-400rpm of extra power and torque. Doesn't sound like much when I put it like that and think what I paid [
] I don't think even SW's next chip will find the better part of 20FtLbs it is lagging behind yours though.I am still staggered at the output of your car [
]
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