Surrey Rolling Road - Dyno Day. 10th Nov.

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Re: Surrey Rolling Road - Dyno Day. [Re: ] #483235 13/11/2007 04:05 13/11/2007 04:05
Joined: Dec 2005 Posts: 5,405 Castle Combe Flea Forum is my life
Flea Forum is my life Joined: Dec 2005 Posts: 5,405 Castle Combe	Could be a number of things but most likely turbo oil seals.

Re: Surrey Rolling Road - Dyno Day. [Re: ] #483290 13/11/2007 05:07 13/11/2007 05:07
N Nazo Unregistered
Nazo Unregistered N	Originally Posted By: sporadic_kit 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

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #483742 14/11/2007 00:03 14/11/2007 00:03
A Akeme Unregistered
Akeme Unregistered A	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!

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #483825 14/11/2007 01:21 14/11/2007 01:21
D davidub Unregistered
davidub Unregistered D	Originally Posted By: Akeme 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?

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #484051 14/11/2007 04:34 14/11/2007 04:34
Joined: Jul 2006 Posts: 2,241 Sevenoaks mrc Club member 25
mrc Club member 25 Competition Level Joined: Jul 2006 Posts: 2,241 Sevenoaks	Hummm, I have a leaky manifold to! Maybe that's why I ran lean to! $\:\($ Mr C

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: mrc] #484086 14/11/2007 05:16 14/11/2007 05:16
D davidub Unregistered
davidub Unregistered D	Originally Posted By: mrc 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 $\:\?$

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #484179 14/11/2007 13:55 14/11/2007 13:55
S suba Unregistered
suba Unregistered S	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.

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #484190 14/11/2007 14:09 14/11/2007 14:09
D davidub Unregistered
davidub Unregistered D	Originally Posted By: suba 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?

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #484194 14/11/2007 14:16 14/11/2007 14:16
Joined: Dec 2005 Posts: 5,405 Castle Combe Flea Forum is my life
Flea Forum is my life Joined: Dec 2005 Posts: 5,405 Castle Combe	Depending on how bad the crack is, you would be more likely to get a leaner reading at low rpms when the crack is widest. Most cracks will close when the manifold gets very hot. That said the if the crack is still open then the faster gas velocity will draw in more air as rpms climb.

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: Flea] #484226 14/11/2007 15:06 14/11/2007 15:06
H h2ypr Unregistered
h2ypr Unregistered H	But drawing in air as its being ejected from the system, will only affect the reading, not the power? Ross

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #484468 14/11/2007 19:08 14/11/2007 19:08
A Akeme Unregistered
Akeme Unregistered A	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.

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #485501 15/11/2007 23:49 15/11/2007 23:49
W Webbo Unregistered
Webbo Unregistered W	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

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #485628 16/11/2007 03:24 16/11/2007 03:24
Joined: Dec 2005 Posts: 21,071 Chertsey in the Thames bockers Hon Club Member 007
bockers Hon Club Member 007 Forum Fossil Joined: Dec 2005 Posts: 21,071 Chertsey in the Thames	The GTECH1 graph is near the same as mine and the more driveable by the looks of it. The 2 has the power coming in at the top end. Rather drive the richer of the two.

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #485769 16/11/2007 12:42 16/11/2007 12:42
Joined: Dec 2005 Posts: 2,194 Göteborg, Sweden Freddan72 Competition Level
Freddan72 Competition Level Joined: Dec 2005 Posts: 2,194 Göteborg, Sweden	You are gaining HP at the top (maybe +15-20 HP), but you lose power all the way up to 4500 rpm. Boost is also less with Gtec2. Did you use the same boost control? Coupé Fiat 20V Turbo Plus 1999, T19 Mitsubishi turbo https://youtu.be/O9qrLj3Ap00 Now FCP Stage3!

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: Freddan72] #485812 16/11/2007 15:08 16/11/2007 15:08
W Webbo Unregistered
Webbo Unregistered W	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.

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #486970 18/11/2007 16:49 18/11/2007 16:49
S suba Unregistered
suba Unregistered S	Here's some graphs of my runs: http://i11.photobucket.com/albums/a198/suba11/4.jpg http://i11.photobucket.com/albums/a198/suba11/3.jpg http://i11.photobucket.com/albums/a198/suba11/2.jpg http://i11.photobucket.com/albums/a198/suba11/lastscan.jpg One think I think is a bit wierd is that my low boost setting seems to run leaner than the high one.....not sure why that would be. $\:\?$

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #486971 18/11/2007 16:57 18/11/2007 16:57
D davidub Unregistered
davidub Unregistered D	Originally Posted By: suba Here's some graphs of my runs: http://i11.photobucket.com/albums/a198/suba11/4.jpg http://i11.photobucket.com/albums/a198/suba11/3.jpg http://i11.photobucket.com/albums/a198/suba11/2.jpg http://i11.photobucket.com/albums/a198/suba11/lastscan.jpg One think I think is a bit wierd is that my low boost setting seems to run leaner than the high one.....not sure why that would be. $\:\?$ 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.

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #487001 18/11/2007 18:10 18/11/2007 18:10
Joined: Dec 2005 Posts: 12,294 Sandhurst Begbie Ex El Presidente
Begbie Ex El Presidente I AM a Coop Joined: Dec 2005 Posts: 12,294 Sandhurst	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 Originally Posted by Jonny - After being taken out at Spa Your car is Usain Bolt with wellies

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #487012 18/11/2007 18:22 18/11/2007 18:22
S suba Unregistered
suba Unregistered S	http://i11.photobucket.com/albums/a198/suba11/perfectmap2.jpg http://i11.photobucket.com/albums/a198/suba11/perfectmap1.jpg Here are the graphs from Perfect Touch - no engine changes have been made since.....

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: Begbie] #487015 18/11/2007 18:25 18/11/2007 18:25
S suba Unregistered
suba Unregistered S	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.

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #487018 18/11/2007 18:27 18/11/2007 18:27
Joined: Dec 2005 Posts: 12,294 Sandhurst Begbie Ex El Presidente
Begbie Ex El Presidente I AM a Coop Joined: Dec 2005 Posts: 12,294 Sandhurst	Hard to say, but as you had it mapped for both settings, i dunno then $\:D$ p.s. I'm going to look at a speed 12 over in Richmond later, want to come? $\:\)$ Originally Posted by Jonny - After being taken out at Spa Your car is Usain Bolt with wellies

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: Begbie] #487065 18/11/2007 20:01 18/11/2007 20:01
S suba Unregistered
suba Unregistered S	Yep.

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: Begbie] #487066 18/11/2007 20:02 18/11/2007 20:02
S suba Unregistered
suba Unregistered S	My guess is that on the high setting they've dialled in more advance so raised the fuelling to compensate.

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #487067 18/11/2007 20:07 18/11/2007 20:07
K Kenno Unregistered
Kenno Unregistered K	They can't map for different boost settings can they? $\:\?$

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #487073 18/11/2007 20:17 18/11/2007 20:17
Joined: Dec 2005 Posts: 5,405 Castle Combe Flea Forum is my life
Flea Forum is my life Joined: Dec 2005 Posts: 5,405 Castle Combe	They can and should but you are limited by the MAF and the fueling tables. If like me you have a max boost set to 1.7bar then the MAF voltage range isn't great enough to detect all airflow between base 0.9 - 1.7bar. Basically you when you max out the MAF you simply have to set the fueling for your highest boost point but this may mean you overfuel at a lower boost because the MAF is still at max airflow.

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: Flea] #487453 19/11/2007 15:53 19/11/2007 15:53
S suba Unregistered
suba Unregistered S	I noticed on the printouts that they have a setting for tyre pressures - what difference do they make on a rolling road?

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: Flea] #492669 27/11/2007 17:34 27/11/2007 17:34
S suba Unregistered
suba Unregistered S	Any footage of the day Leight?

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #492682 27/11/2007 17:50 27/11/2007 17:50
Joined: Dec 2005 Posts: 5,405 Castle Combe Flea Forum is my life
Flea Forum is my life Joined: Dec 2005 Posts: 5,405 Castle Combe	Yeh, had a nightmare couple of weeks but will post something. I was hoping to get all the figures off Kenno but not heard anything yet.

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: Flea] #492696 27/11/2007 18:16 27/11/2007 18:16
K Kenno Unregistered
Kenno Unregistered K	Sorry Flea.. just given Alessandro another boot up the bum. $\:D$

Re: Surrey Rolling Road - Dyno Day. 10th Nov. [Re: ] #492752 27/11/2007 19:05 27/11/2007 19:05
Joined: Dec 2005 Posts: 5,405 Castle Combe Flea Forum is my life
Flea Forum is my life Joined: Dec 2005 Posts: 5,405 Castle Combe	Ta very much $;\)$

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