john banks

What car, model year, turbo, intercooler, engine management, any other relevant information please - e.g Water injection, major breathing mods etc. If you have boost threshold info - eg. when you reach 1 bar/14.5 PSI that would be nice too.

I know boost is not the be all and end all - airflow, fuelling and timing need to be considered amongst other factors, just curious as the vast majority of the rolling road plots on the dyno site do not have boost plots.

It would be nice to have some TD05, VF23, VF24 examples - modded or unmodded. Plots would be lovely.

Thanks, just trying to get a real world comparison between turbos.

Cosie Convert

John

Emailed you my dyno run complete with boost plot. Plots from the other cars run that day can be found on MLR.
One was a BRD with Link, FMIC and VF22. One had a VF28. Mine as you know is the 'poor brother' TD05
Of interest was the way the EVO7 spools the later generation TD05, very quick spool up. Something to do with titanium bits I believe ?

R19KET

RE TD05 on the EVO, don't forget that it sits much closer to the heads, and the gas isn't havng to go through several feet of pipe first.

Mark.

David_Wallis

Doh... Why did you have to say that mark... I was off to pinch the turbo from an evo 5 then!

David

dowser

John,

I emailed you a few DDash logs;

my00 PPP + Dawes normal induction/exhaust mods + ported headers
my00 tek2 + Dawes (as above)
my99 ae800 + Dawes + as above + hybrid td04 (rs2 compressor wheel)

Richard

Dizzy

MY96 - SS BB & DP, Blitz induction
5000 - Dont know
6000 - Dont know
7000 - Dont know

Still havn't recieved either my dawes or Boost gauge yet (just sent the poxy phantom one back for a nice shiny defi)
hopefully it will arive today so I'll edit and let you know tommorow. I'm expecting about 0.7bar held atm.

Floyd

iTrader: (9)

Dowser

Why are you using a DD with a Tek2 map?

I thought that the Tek2 would replace a std ECU and DD set-up and give the same or better boost etc?

F

dowser

Floyd,

I ran the Dawes with my PPP to up boost marginally - tek2 by itself seemed a bit tame, so I slapped the Dawes back on...and carefully monitored everything with DeltaDash

When I get some time I'll do a couple of direct power run data log comparisons between the PPP and tek2 (both with Dawes) - they feel different (tek2 is *very* smooth), and I'm not sure which is quicker!

Richard

Floyd

iTrader: (9)

Bu66er!

I was hoping not to see a post like yours, content that the TEK2 would give better results than the PPP and better than a DD +std ECU car.

Have you had RR figures for comparison Dowser? Or perhaps because it is so smooth that it masks the speed?

F

dowser

Lets put it like this - I've been running with the tek2 over the PPP for 2 weeks now. I just want to datalog to be sure...as you say, because it's so much smoother

If you fit a tek2 in place of a standard ecu it will be like fitting a PPP ecu - you'll notice a big gain But I *already* had a PPP ecu.....

When I get time I will do a back-to-back dyno run...but it wont be for a while now (need to finish brakes and fit new suspension first).

Richard

Dizzy

MY96 - SS BB & DP, Blitz induction and now a shiny new Defi boost gauge

3000 - 0.7
3500 - 0.9 (Peak) (well just over 0.9 )
4000 -> 0.8 (held)

and how cool are defi gauges?!?! cool toy to play with while your waiting the car to cool

Now that is over what I expexted from a MY96 but I have been told IIRC that the fuel cut should kick in just over 1bar. I should have my Dawes ariving sometime soon (within a couple of weeks)

Lambo

My99, SS d/p, cat center, ITG, Dawes

4th gear boost ;
Before Dawes ( 225bhp )

Max boost 14
5000 - 13.5
5500 - 13
6000 - 11
6500 - 9.5

After Dawes ( 256bhp )

Max boost 16
5000 - 15
5500 - 14.5
6000 - 13.5
6500 - 12

Hoppy

UK00, full PPP, ScoobySport down-pipe and de-cat centre-section, ITG panel filter.

In 3rd gear, 12 deg C, Optimax, Defi gauge reads in Kg/Cm2 - so these bar figures are 2% out

Car hits max boost of 1.2bar/17.4psi at 2,700rpm

3,000rpm 1.2bar/17.4psi (ditto 4th gear)
4,000rpm 1.2bar/17.4psi (ditto 4th gear)
5,000rpm 1.1bar/15.95psi (ditto 4th gear)
6,000rpm 0.9bar/13.05psi
7,000rpm 0.8bar/11.6psi

Peak boost 1.25 - 1.3ish, 1.2bar held. In warmer weather, held boost is 1.1 - 1.15ish.

John, looking foward to your new ECU/turbo findings

Richard.

john banks

With 1.5 PSI less boost pressure across the range and small changes to fuelling and timing with a Tek 3 I have the same torque and power that the Dawes setup had and in some areas the difference is marked. Still some work to do on it to get it just right - Scottish air is different to English air - thankfully - so the boost control is a bit frisky right now. The Ecutek software is very nice indeed for mapping and it is so much better than faffing around with Dawes and fuel cut lifters.

WREXY

John,

Are you doing the mapping yourself on the Tek 3 then?

Cheers,

Wrexy.

john banks

Yes I now have the software. Mervyn, Stephen and I worked on the map at PE. Interesting that some of the biggest gains came from adding in fuel to the Subaru lean spot during spool up - and this is without an induction kit. This netted about 20lbft in some areas.

[Edited by john banks - 5/13/2002 10:57:33 AM]

WREXY

Excellent!!! I may have to purchase this software!

John, do you ever go on holidays abroad? If yes, how about coming over to Greece?

Cheers,

Wrexy.

PS Beastie will be coming over!!!

Tim W

iTrader: (1)

VF22/28 Hybrid, often called a BT270

3000 - 1 bar
3250 - 1.25 bar
1.25 bar then held until red line at 7000 rpm

Car has HKS FMIC, HKS Headers (manifold), 440cc Injectors, Link ECU Scoobysport Downpipe (for now...), HKS Hiper Exhaust system, Custom up pipe, home brew Induction Kit, erm...water injection not plumbed in...uprated fuel pump in it's box, pressure reg on order...

Oh yeah it's an MY98 UK Turbo, with a 77000 mile engine that's been thrashed

[Edited by Tim W - 5/6/2002 12:07:04 PM]

john banks

MLR results

[Edited by john banks - 5/6/2002 12:48:31 PM]

Dizzy

Thats strange I havn't noticed any real "drop" in boost after it drops to the "held" pressure. Is this just a phase 2 engine thing or am I just not reading the gauge properly? I'll give it some hammer on the way home
Problem is I'll never get outa 3rd as 6500rpm is about 85-90 (IIRC) and 6500 rpm in 4th is going to be a lot faster than I'm prepared to do on a road Maybee my local dragstrip (aka the A329M will be used )
although 12 is about 0.8bar which is the same as me

[Edited by Dizzy - 5/10/2002 9:26:08 AM]