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Re: Surrey Rolling Road - Dyno Day.
[Re: ]
#483290
13/11/2007 05:07
13/11/2007 05:07
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Nazo
Unregistered
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Nazo
Unregistered
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Hi all, I was the one with the smokey red coupe.
Can anyone suggest what may cause this? take it easy on the Malboro Lites cheer u dude and dont worry so much..was a good day..just save up for a new turbo
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: ]
#483742
14/11/2007 00:03
14/11/2007 00:03
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Akeme
Unregistered
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Akeme
Unregistered
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Found out why i was running really lean top end but had not melted a piston yet...
Rang Rob at PT and he kindly told me to bring the car in for a checkover on the dynos to see how accurate the fuelling graph was, he didnt bother though as he found out the problem straight away.
Manifold is blowing abit, so the sensor they shove up the exhaust was getting dodgy readings, everythings fine just need a new maniufold at some point.
Surprising i made more power than PT with a leaky manifold!
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: ]
#483825
14/11/2007 01:21
14/11/2007 01:21
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davidub
Unregistered
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davidub
Unregistered
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Found out why i was running really lean top end but had not melted a piston yet...
Rang Rob at PT and he kindly told me to bring the car in for a checkover on the dynos to see how accurate the fuelling graph was, he didnt bother though as he found out the problem straight away.
Manifold is blowing abit, so the sensor they shove up the exhaust was getting dodgy readings, everythings fine just need a new maniufold at some point.
Surprising i made more power than PT with a leaky manifold! Did you only run lean at the top end or was it everywhere?
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: mrc]
#484086
14/11/2007 05:16
14/11/2007 05:16
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davidub
Unregistered
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davidub
Unregistered
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Hummm, I have a leaky manifold to! Maybe that's why I ran lean to! Mr C If this was the problem would it not mess the fuelling up all over the rev range and sort itself out when warmend up
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: ]
#484179
14/11/2007 13:55
14/11/2007 13:55
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suba
Unregistered
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suba
Unregistered
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It will most likely only affect the reading that they get from the wideband lamda - not the way the car is actuially fuelling, though off boost it may be off.
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: ]
#484190
14/11/2007 14:09
14/11/2007 14:09
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davidub
Unregistered
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davidub
Unregistered
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It will most likely only affect the reading that they get from the wideband lamda - not the way the car is actuially fuelling, though off boost it may be off. sorry, meant the reading, so same comment as above ... Would the fuelling reading not be affected all over the rev range if it was the manifold?
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: Flea]
#484226
14/11/2007 15:06
14/11/2007 15:06
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h2ypr
Unregistered
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h2ypr
Unregistered
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But drawing in air as its being ejected from the system, will only affect the reading, not the power?
Ross
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: ]
#484468
14/11/2007 19:08
14/11/2007 19:08
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Akeme
Unregistered
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Akeme
Unregistered
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I doubt the manifold got particularly hot as they only performed 2 power runs.
Indeed h2ypr, i think thats why the reading was borked and the power figures were not.
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: ]
#485501
15/11/2007 23:49
15/11/2007 23:49
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Webbo
Unregistered
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Webbo
Unregistered
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I finally got round to putting my 2 graphs together. One was using a GTEC1, the other a GTEC2. I changed from the GTEC1 to a GTEC2 a couple of months ago in the hope of a bit more fuel. Unfortunately it made it significantly leaner! GRAPH
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: Freddan72]
#485812
16/11/2007 15:08
16/11/2007 15:08
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Webbo
Unregistered
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Webbo
Unregistered
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The gain was the same (16%), but on the GTEC2 run I actually increased the set (from 50-52%) and also the start gain from 0.5 to 1.2 So it seems setting the higher start gain slowed the spoolup! I did see a bit more boost by going from 50-52% set though. All in all theres really not much between the chips except the GTEC1 is richer . Anyway I now have a GTEC2 HF in there so hopefully thats a bit better.
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: ]
#486970
18/11/2007 16:49
18/11/2007 16:49
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suba
Unregistered
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suba
Unregistered
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: ]
#486971
18/11/2007 16:57
18/11/2007 16:57
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davidub
Unregistered
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davidub
Unregistered
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My low boost setting is the same. Your boost seems to be coming in very late too (and tails off alot) The results seem very strange, there must be something up with their equipment!
Last edited by davidub; 18/11/2007 17:18.
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: ]
#487001
18/11/2007 18:10
18/11/2007 18:10
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Joined: Dec 2005
Posts: 12,295 Sandhurst
Begbie
Ex El Presidente
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Ex El Presidente
I AM a Coop
Joined: Dec 2005
Posts: 12,295
Sandhurst
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If a car has been mapped for say 1.4bar boost and then you drop it to 1bar boost, the car will need to be mapped for that value as well, else the ECU will try and make it's own adjustments. This is my understanding of it anyway
Your car is Usain Bolt with wellies
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: ]
#487012
18/11/2007 18:22
18/11/2007 18:22
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suba
Unregistered
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suba
Unregistered
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: Begbie]
#487015
18/11/2007 18:25
18/11/2007 18:25
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suba
Unregistered
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suba
Unregistered
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Alexis - Rob ran the two maps on Perfect Touch's Dyno as I said that I wanted a low boost setting for track. I'm just wondering if with the fuelling like that I'm actually better off running the high setting on track - though if the engine was going to go on the lower setting it would have done so allready.
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: Begbie]
#487065
18/11/2007 20:01
18/11/2007 20:01
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suba
Unregistered
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suba
Unregistered
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: Begbie]
#487066
18/11/2007 20:02
18/11/2007 20:02
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suba
Unregistered
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suba
Unregistered
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My guess is that on the high setting they've dialled in more advance so raised the fuelling to compensate.
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: ]
#487067
18/11/2007 20:07
18/11/2007 20:07
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Kenno
Unregistered
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Kenno
Unregistered
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They can't map for different boost settings can they?
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: Flea]
#487453
19/11/2007 15:53
19/11/2007 15:53
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suba
Unregistered
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suba
Unregistered
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I noticed on the printouts that they have a setting for tyre pressures - what difference do they make on a rolling road?
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: Flea]
#492669
27/11/2007 17:34
27/11/2007 17:34
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suba
Unregistered
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suba
Unregistered
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Any footage of the day Leight?
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Re: Surrey Rolling Road - Dyno Day. 10th Nov.
[Re: Flea]
#492696
27/11/2007 18:16
27/11/2007 18:16
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Kenno
Unregistered
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Kenno
Unregistered
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Sorry Flea.. just given Alessandro another boot up the bum.
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