No problem controlling the power, a KW kit and some 285's should do the trick unless your heading into 21 psi + territory. I just picked up a lightly used KW kit for mine along with some Racers Edge adjustable camber plates looking forward to getting it on some time in Feb along with all the other jobs I need to to before I go to the dyno.
LIL has full boost and full revs
- Thread starter Diver944
- Start date
eastendr
New member
As a temporary link to the graphs, go here http://www.cannell.co.uk/DD%20LIL5766-2.htm
Full update after the weekend !
Full update after the weekend !
Peter Empson
PCGB Member
Congratulations!
What a truly fantastic result for its inaugural run. All hail the torque meister [
]
I will be bringing sand bags to the next track day, but its going to take a lot of ballast to even the odds against us mere mortals []... Maybe some lead in the rear footwells will do it []
I can't begin to imagine what it'll do once its been properly mapped. I also can't wait to see it in action. Roll on Bedford!
Best regards,
Peter
What a truly fantastic result for its inaugural run. All hail the torque meister [
]I will be bringing sand bags to the next track day, but its going to take a lot of ballast to even the odds against us mere mortals [
]... Maybe some lead in the rear footwells will do it []I can't begin to imagine what it'll do once its been properly mapped
. I also can't wait to see it in action. Roll on Bedford!Best regards,
Peter
Indi9xx
New member
As the rpm's rise, the demand on airflow increase exponentially both on the intake side and the exhaust side, so Paul's car can not maintain boost because it cant suck in enough air to maintain 18psi being consumed by such a large engine. Most of this is due to the restriction of the airflow meter. A similar problem will be the exhaust and the intake manifold.
The other problem is that inaccuracies of the mapping (ignition and fuel) become exponentially more of a problem as the rpm raise... So again its no shock that its making its power in a narrow band where the mapping seems to be about right, but above that point the ignition timing in particular is all wrong for this application.
Don't knock diesels though... they are doing blooming well in motor sport these days!
So far I am well happy with how well its doing on a map thats designed for a modified 944 turbo with a 2.5 engine.
The other problem is that inaccuracies of the mapping (ignition and fuel) become exponentially more of a problem as the rpm raise... So again its no shock that its making its power in a narrow band where the mapping seems to be about right, but above that point the ignition timing in particular is all wrong for this application.
Don't knock diesels though... they are doing blooming well in motor sport these days!
So far I am well happy with how well its doing on a map thats designed for a modified 944 turbo with a 2.5 engine.
Diver944
Active member
ORIGINAL: Indi9xx
Don't knock diesels though... they are doing blooming well in motor sport these days!
Yeah you tell 'em Jon [
] and I got 60mpg out of her the other daythen I woke up [8|]
Rick is making me some TDi decals as we speak. Actually to tell the truth LIL did finally relent and is now proudly wearing a new decal supplied by Rick yesterday. He took a number of photos from different angles so I'm sure they'll appear on his site soon
Diver944
Active member
Yes that was the only slight dampener on the day for me. I really was hoping that Chris could dial in a flat boost level (just like Tony, David Benjamin and Mark K have with their Greddys). However Jons explanation works for me, the Turbo just cannot suck in enough air through that tiny AFM and snorkel once the revs rise.
I think that if it could hold a steady 15psi we would start to see detonation again as the revs rise because of the mapping, so it's actually not a bad thing, and we do know the simple answer to get round the whole issue.
Bye bye AFM [&o] I don't think you'll be seeing Christmas 2007 from under LILs bonnet [8|]
mik_ok
New member
ORIGINAL: Indi9xx
Don't knock diesels though... they are doing blooming well in motor sport these days!
Not at all - I ran a remapped TDI for years, and it offered a superb compromise between economy and performance.
Restriction in the intake you think...... hmmmmm..... I've heard of an electric supercharger device which would completely solve all your problems for hardly any money at all..... [
]
Peter Empson
PCGB Member
Blimey, look LIL produces so much torque its cracked its rear number plate
Like the sticker Rick, almost makes me wish I still had my rubber spoiler
Like the sticker Rick, almost makes me wish I still had my rubber spoiler
Diver944
Active member
I know, how embarressing [&o]
As Rick was taking those pics I thought, OMG look how disgusting that plate is. On closer inspection the backing material is coming away from the clear plastic and all manner of crud is getting in there. Something else to add to the list of 'things to do'
Paul and Jon, can you give us a hint of why this car is producing so much tq? Is it merely that is has gained an extra 700cc's? Is it the larger turbo? What are the spec's on the turbo as to housing size etc? Even though your plan was for a very tractible car with more emphasis on low down tq v's upper rpm monster, do you now see that you can easily shift the power band to the right while retaining plenty of tq but getting more driveability overall? If you see what I'm getting at? I would think that by moving a bit of the curve over will increase the overall appeal of the car and may help with traction too (although that's only a theory).
Still it must be satisfying to know that you have people all over the planet eagerly following it's progress. Keep it coming!!!
Still it must be satisfying to know that you have people all over the planet eagerly following it's progress. Keep it coming!!!
Diver944
Active member
My laymans guess would be it's a combination of the engine and turbocharger Patrick, but hopefully Jon or Simon will give you the technical reasons. I know I asked for as much lowdown useable power with as quick a spool-up as they could make possible. Simon specced the turbocharger to be a free spinning ball race design which I believe has a modified KKK hotside that is equivalent to a #10 housing and uses a hybrid Garret on the cool side that has a mahoosive 4" intake port.
We know its the restrictive 1.5" square AFM that is holding everything back, it simply can't allow enough air into the 4" whirling dervish of the turbine that is sucking its little heart out only 12" away. To be honest I would be more than happy to leave the car exactly as it is for the foreseeable future because its such a joy to drive right now. But rest assured that the AFM will be replaced and a proper fuel map will match it to see the falling torque curve lifted up and obviously the power will rise too [8D]
We know its the restrictive 1.5" square AFM that is holding everything back, it simply can't allow enough air into the 4" whirling dervish of the turbine that is sucking its little heart out only 12" away. To be honest I would be more than happy to leave the car exactly as it is for the foreseeable future because its such a joy to drive right now. But rest assured that the AFM will be replaced and a proper fuel map will match it to see the falling torque curve lifted up and obviously the power will rise too [8D]
Hilux
New member
Whilst this thread is of a technical nature and related to hi performance engines I found this v interesting article while looking up windage trays [8|]
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