stevebt

iTrader: (8)

didnt think i would do it but im thinking of changing my turbo have modded my99 and am thinking of putting either a TD05 or one of the the VF range probably a 29, which would work the best, the only mod i have is no original exhaust exhaust parts, K&N Filter and a TEK3, turbo is the only other mod i can and will do without changing internals is it worth it. car is running 1.9 bar of boost at 6860rpb according to my secs machine

Andy.F

Steve, you sure ? 1.9 bar at 6800 rpm on a td04
I hope that's an absolute pressure ? ie 0.9 bar above atmo ?

[Edited by Andy.F - 12/07/2003 00:03:07]

stevebt

iTrader: (8)

thats what my secs machine says and it records peak values so i dont have to guess

sorry edited to say yes 1.9 BAR on a tek 3

[Edited by stevebt - 12/07/2003 00:32:34]

stevebt

iTrader: (8)

andy do you want to mail me on a price for a TD05 for my car

David_Wallis

why steve you selling them?



1.9bar on a td05 is mad let alone a td04

David

john banks

Steve - please confirm what data item you are reading off the S.E.C.S.

If it is running 1.9 bar at those RPM there are two miracles - firstly how it does it, and secondly why it hasn't gone kaboom

Andy.F

JB, these TEK 3 maps are a bit more aggressive these days

Steve you got mail

stevebt

iTrader: (8)

sory was a little drunk when i posted last nite should of read 1.8bar of boost and it should of been 6760 rpm. and i was reading the peak values for RPM and boost from the secs machine


hello john
told you the boost was that high when we swapped the ecu thats why i was uncertain about swapping incase i lost the boost

Adam M

1.8 bar?


well thats ok then

greasemonkey

Anybody think the SECS might not be taking the atmos pressure away from the MAP reading before displaying it?

jonny gav

iTrader: (1)

steve,

if you are comming to the meet on tuesday i will bring a boost guage with me and test it for you.

don't think it will be 1.8 bar, are you sure its not 18 psi?

stevebt

iTrader: (8)

ive done it again and this time i was sober, if i magically place the 1 in here all will be normal 1.18bar of boost peaking at 1.2 bar of boost cant believe i put the wrong one in twice,now which would be the best turbo for this the td05 or one of the vf range

BAH

I take it the TEK3 doesnt change your boost much then....

mine does 1.2bar with a dawes on......

Note to...self dont throw money at a TEK3

BAH

I knew that was coming....

john banks

and?

john banks

This plot is of knock correction on an AE800 ECU (early MY99) running 17 PSI in 4th gear (fuel cutting in 5th) and being driven hard on a hot day (not on track) using SUL after a period of learning. The ECU is responding appropriately and containing the situation for most of the rev range until 4500 RPM when it audibly detted with several crackles over the next 500 or so RPM despite the ECU's attempts at knock correction. The ignition timing has hit the end of the map and is not retarding further as it needs to, plus the values are optimistic for such boost levels.

Of course you can use Optimax, and turn the boost down a little so it only runs 16.5 PSI in 5th gear on a cold day (so about 1-1.5 PSI lower than the above), hence my fairly conservative recommendations in the Dawes FAQ. I don't think anyone has blown their engine yet by following them

FASTEST SCOOB

I just disconnect the actuator, better than dawes the boost just seems to regulate.

I get extra thrust from the white jet of smoke from the exhaust too, so it must be fast. My mate reakons that it must be 350hp, 'cause all scooby's with an exhaust and filter do 320 easy.

hEY THAts BETTEr. can SOMEone TELL ME how to do the fuel and ignITION maps? I found an A-Z in the car, and the owners MANUal has the dealer NETwork but no fuel map?

I wanna 10 second car!!

John Banks, you seem like a real smart guy, you should try tuning for money. Maybe my mate could teach you a few of his tricks to.

F

john banks

How are you going to add all the fuel that Steve's exhaust manifold needed at the top end (and the top end only) by using only a Dawes device or any cheaper method?

How can he safely run 1.2 bar when the fuel cut is 1.21 bar without inadvertently advancing the ignition as would happen with a FCD?

How are you going to know you have timing at this level which is safe on pump fuel?

Do we gauge power and reliability from the reading on our inaccurate boost gauges? Interestingly, cars with manifolds and TD04s do not go their best by wringing out the top end boost and choking the turbo as would happen with a Dawes. You will note that the highest publicised UK figures for a TD04 (and TD04 hybrid) with a manifold were achieved by mapping the ECU and not running silly top end boost - they end up slower if you get obsessed by boost. I seem to remember a torque of 300lbft at 1.14 bar boost, and power over 300 BHP from comfortably under 1 bar at peak power.

An easy way to achieve all this effectively is a remap. I don't know how you would get Steve's car to run safe ignition timing without a remap, since the values required on his car are not ones that are available on the standard map and so could not be hit by a S-AFC or similar.

A Dawes is a great tool for controlling boost and it does it superbly, but not a substitute for setting up a car properly when it needs fuelling and timing changes.

[Edited by john banks - 7/12/2003 10:05:38 PM]