...more sunday sport by the looks..lol....how folk on here can slag him off is unreal ....and porkie what is a veyron engine....4 x skoda/vw lumps stuck together with a turbo on each..lol...technically tabetha is right

 

So if you put the engine in a Skoda it will have the same perfomance? Good luck once you get to 250mph.

 

Better performance, have better power to weight

 

Dont confuse intelligence with arrogance

 

I've never seen arrogance displayed by Tabetha, maybe people are confusing their jealousy of his knowledge with it?

 

Tabby talks some proper rubbish sometimes tho, there no denying that.

He is knowlegable, then soon after he properly drops the ball with some properly daft comments.

Wouldnt say arrogant, just not as right as he often thinks.

 

im not saying he don't know his stuff but if you try and tell him he is wrong

 

If both engines had the same BSFC, created the same BMEP during combustion and the same VE then neither will produce anymore power than the other. The only benefit would be that the larger engine will spool the turbo up faster and produce slightly more off boost torque.

The key is airflow which is down to head, inlet, turbo and exhaust etc. Not capacity as that has nothing to do with flow.

 

I don't quite agree with that. I know there are alot of other factors that influence everything but....

an engine is just an air pump like your compressor and on a n/a engine a bigger cylinder will pump more air per 4 stroke cycle than a smaller cc. A greater flow of air will go through the engine.

The gains aren't as simple as this in real life as you have inlet/exhaust restrictions, engine speed etc that all effect VE but the basic principle is as above.

 

i can understand what and why some comments have been made!but i have always found him very very helpful!

 

i agree he has allways been helpful to me

 

not at all,,, theory is always correct!!! if you apply the right fomula and have ALL the information needed and dont make passing statements!

 

i think you have grasped the wrong end of the potato there mate

if you have everything else being equal, the the engine that is 40% smaller will produce 40% less power

won't it?

 

Has was kind of chucked out of the Sierra Owners Club Forum and they are a friendly bunch of chaps. Form the posts on there and here it seems he copies a lot of data/information from other peoples posts and passes it off as his own. Not saying that is wrong or bad or anything but when it comes to his own original opinions he can be way of the mark.

 

but that quote is utter bollocks,show me a car from anywhere that makes huge power on 12 psi or less,and ill find another that makes more on more boost,from reading dave walkers guide every so often it worries me that people with turbo cars still take their cars to him.

 

i didn't mean this thread to have a go at tabetha in the way that some of you have, it was just a bit of fun

as for the bollocks that some of you have got onto about engine size etc (how that happened i don't know ) - consider this:

a larger displacement engine usually has a larger bore that can accomodate a larger valve area and therefore has the capability to flow more air through the cylinder head (all other things being equal)

 

I have to agree

He is always willing to help , seems gen enough , but i have seen some utter shite posted also , i remember some shite about rs500"s once

Saying that , he has more knowlage than me about engines etc , so who am i to talk

 

Not if the theory is made up by some clueless cunt.

 

maybe these guys would have been happier if they just upsized there turbo after 12 psi,but somehow,i doubt it!
http://www.youtube.com/watch?v=LNXMK...eature=related

 

Prove the quote is bollucks then? Do you have DW's credentials or do you just read about stuff in Evo? Put up or shut up.

 

this thread was supposed to be about cossie ecu's, not Dave Walker

 

i dont need to see his credentials for that statement to be horseshit.and i didnt know he writes for Evo?you dont just increase turbo size at 12 psi.he knows a lot about NA engines granted,but everytime he writes about turbos it makes me cringe for the guy.

see the video i just posted,they show varying boost pressures,increasing power and torque from 10psi to 30 psi on the same turbo and engine.do you in ANY way believe that the car would be quicker or easier to drive if they were to get a turbo that would produce those numbers on less than 12 psi?it would be a horrendous pig to drive with HUGE lag and wouldnt come on boost till WAY up the rev range.so,prove his statement is true
put up or shut up,in your words.

 

hands up on here who would love to suck DWs cock and 100% takes everything he says as gospel.

12psi all the way and just fit bigger and bigger turbos for more power just like he reccomends, yeah man, that will drive MINT

 

 

http://www.youtube.com/watch?v=-O3FG...eature=related
obviously boost logic know nothing,as even though they are in the sevens,they shouldnt be running 42 psi,12 psi ALL the way baby!

 

You make it hard dont you. Do you have any tuning credentials? Or do you just learn your stuff from Evo?

Since when has Youtube been evidence? You sound like one of these 9/11 conspiracy nutters.



You try to prove a general statement wrong with a specific example? It does not work like that as there will usually be a specific case that is different.

ie

When I work the early shift I generally will go to bed before midnight.

But my quote, and therefore I am talking bollucks because last night I went to bed at 0035.

 

no his sweeping statement was that most big power cars run 12 psi or less,NOTHING to do with his tuning abilities past or present,or mine for that matter.the statement he wrote in a magazine is rubbish,pure and simple,i dont care about wether he has tuned a ferrari,or whatever,or your weird and wondrous defending of the man.

do you agree with the 12 psi statement?yes or no?show me one of these cars that runs sub 12 psi to make big power.i have shown 2 cars,both running far in excess of the 12psi,one by a very reputable tuner,the proof is in the times and speeds they are running,regardless of the site it is hosted on.i could bring Rods car into this,undoubtedly the highest speed car on this forum,PROVEN by many people with as much talent and know how as DW,yet Rod runs massively more than 12 psi,as does martin hadland.so,please give an example of why it is true so i may believe you.

 

So where's Wally I mean Tabetha?

 

You dont get it do you? It was a general statement which you have taken out of context and are trying to prove wrong with specific examples. Go read the article in full and then see if you change your mind.

Your proof is times and speed? DW makes no claims whats so ever that the fastest cars have 12 PSI or less!!! Anyway, the Veyron has just 15.8 PSI of boost which is not a million miles away from 12 PSI is it!!!!!

Im not defending DW as a person I am defending the fact that there have been misquotes, quotes taken out of context and people have attacked someone without reading the full article. But if I want tuning advice I will go to DW before I got to you.

 

thats fine,but...the quote IS
"The cars making the biggest power always have big turbos an do it on 12 PSI or often less"


so he IS saying that,you even quoted THAT phrase,sowhat are you on????how can i get that wrong?please show me ONE single car!!!
and yes nearly 16 psi is MORE than 12psi
STANDARD cars might run under 12 psi,but how do we tune these cars more often than not?bigger turbo or more boost?
its good that you would go to him,great,off you trot,im NOT a tuner,doesnt mean i cant bloody read or understand.what he has written is rubbish,you are just trying to get on a high horse of some kind because someone told you once that this guy was god in the tuning industry.
now you asked me to put up or shut up.so,i have given examples.
here are some more
stage 1 cosworth,exactly the same turbo as standard,exactly the same engine,it runs circa 15 psi as opposed to about 8,this increases the power and torque,and doesnt do anything to the drive.no one goes up a turbo size for stage 1.i just dont get what you or him are on about.

 

You have not even read the article. You do not know what was written nor the context but you are openly slating someone who clearly knows more than you will ever know. Where do you get off on yourself?

Did DW say a stage 1 Cossie has less power than a standard cossie? No. Your examples mean nothing and will continue to mean nothing until you read the article!!!!!

 

tabetha never responds to a thread baiting him and imo that's the right thing to do. why should he take the bait?

 

it's just a bit of banter. unless he's a miserable cunt, why not join in and have bit of fun.

that was the intention of my original post, although it's turned to shit

 

...could he not be talking production cars only?

 

I agree that this thread has turned to shit and Dingy hasnt even posted once

 

turned to shit - especially now that IMA is posting on it

 

............ ha, ha, ha, ha, I love this Wardy257 guy, he was on FT till he ran away!!! Now if you had, say a 1.6 CVH and wanted big power out of it, would you use a a GT30 at 20+ PSI or a GT42 at <12PSI??


STOP FUCKING TAKING EVERYTHING THAT PPC SAY AS THE GOSPEL TRUTH!!

P.S Zero back pressure in an exhaust is not the most ideal for highest power

P.P.S In theory a Bumble Bee can't fly

 

i fail to see the relevance of the main body of the quote, the less than 12 psi, being misconstrued in any other way other than to mean dw thinks 12 or under is better for a turbo car to produce more than adequate power

 

 

Still no reply from Tabby. Shame as he seems knowledgable and helpful