scoobyvsm3

but what does mapping exactly mean and involve??

Neilo

in short, reprogramming the ECU to take full advantage of engine components and modifications. The PPP that you have (ive been reading elsewhere on the forum) is an "off the shelf" ECU software upgrade which is designed to work on all STIs with a sports cat downpipe and center decat.

However, it is still a map with a relatively large safety margin built in, meaning that the turbo can boost harder if you wanted and the injectors could supply more fuel.

A new map controls everything thats going on in the engine, so if you advance ignition timings, up the boost and give it a bit of extar fuel, then in general terms the car will produce more power.

Thats a very simplistic view, but essentially your reprogramming the engines brain to produce more power

simple eh?

scoobyvsm3

thanx mate.

best i get it re-mapped amonst other things.
would love it to have over 343bhp

Neilo

youll be hard pushed to do it on the standard turbo, i think the very best VF34 or VF35s will do is 350, and thats on a given day, so if youve got the spare cash, maybe get something a little larger, if you go to WRC tech then they will advice you an APS SR40 without doubt, but if you go anywhere else then something along the lines of a TD05 18g or 20g will definitely sort that out

Neilo

just remember also though that just because the scoob would have 343, still wouldnt make it as fast as the M3 necessarily, due to 4wd transmission loss....to guarantee a match in straight line pace then perhaps around 375-380 may be more realistic.

Im not sure what the M3s kerb weight is, but the STIs is 1480kgs from memory....

alloy

I have achieved 380bhp from my bug eye import from a turbo back 3inch decat, HKS Fcon Ecu and HKS EVC 5 1.35 bar

Neilo

Hi Bud, (Lister from SOX.....)

Are you confident that your turbo hasnt been uprated? as ive never head of a standard STI turbo going anywhere near that high....least of all at 1.35bar?

I do stand to be corrected mind.....

alloy

Yep 99.9% sure it's a stock turbo, I haven't changed it and have no reciepts for it, I recieved the car stock so i'm guessing it's still stock turbo, it looks rusty but goes like hell, the other night it was boosting to 1.55 and holding 1.45 bar. Dyno'd at 302 whp so using 25-26% tansmission loss 380bhp

alloy

It is an Import Bug eye STi on an 03 plate, Not sure what the turbo is on these cars, any one know?....

Neilo

I think that precedes the twin scroll era just so id stab at the VF34.

Just out of interest, and please dont take this the wrong way.....but are you sure its 302 at the wheels and not the fly? because other than that youd have to be running like 120ron fuel to generate 380 with a standard turbo :|

alloy

Definatly it's at the wheel because after it was done, i got the sheet and was disapointed that after all that i'd only got 37hp more. He then corrected me and said the book figure of 265 is at the fly, my 302 is at the wheels and to take a 25-26 percent increase for the 4wd transmission loss. It's mapped on optimax. I must be lucky, I thought that this power was common amoung new age cars, My tourque isn't up there though, Can't remember but i think it is 330ish. New turbo and FMIC hopefully to come in the spring!

Mo

03 plate is a twin scroll iirc.

My 54 plate twin scroll with 3" system with high flow cat peaking at 1.51bar produces these results from the Delta Dash Dyno function:-
Maximum Wheel Power: 269.2 BHP @ 5878 RPM
Maximum Wheel Torque: 289.0 LbFt @ 4218 RPM

You sure yours is standard

alloy

Definatly sure it's the stock turbo! Don't think it's a twin scroll though it's on an 03 plate but is an Import Bug Eye. I didn't realise these figures would cause a stir, I was wrong. Soon to be redyno'd after the new clutch and flywheel go on some time soon, so i'll scan the print out and post it up.

Neilo

where are you gonna get it RRd? need to get mine done soon.

alloy

Over at G Force with the p1 club, think there is a space available if you are based down south, about 19 of us so far... Originally had it done up north at TDI, so a comparison would be nice, especially as these figures seem so drastic

Peanuts

iTrader: (15)

wrc tech figures can be fairly accurate, watch yourselves!

Neilo

whats WRC got to do with it?

Peanuts

iTrader: (15)

fair cop that, thought I had read wrcTech lol

Neilo

dazdavies

iTrader: (22)

Ive had just over 300 bhp with a TD04 turbo, headers, fuel pump and a TSL remap before now, So a Stock STI Turbo is more than capable.

Mo

Yes at the flywheel however previous figures quoted were at the wheels. If we use the same 25% transmission losses as alloy quoted you'd have 225bhp.

Alloy, you talking of a Euro Import?

p1mark

if any of you fellas want to go on the RR day alloy is talking about pm me. i have a couple of dates but jan21 is likely. (this is re arranged because our original date was cancelled)

Alloy, i must admit i was a bit shocked when you sent me the specs. I dont doubt you for one minute and it should be interesting to see.

WRC tech and G-force both have identical dynos so all other things being equal should be as accurate.

alloy

Oh yea of little faith we shall let the dyno do the talking I have a printout somewhere in the mess i call home then shows 300whp Although if we aren't anywhere near that on another dyno, some serious questioning about my source's integrity will be raised.