GaryCat

In the latest True Grip, the Scoobysport advert claims to get 285bhp from a MY03 with a exhaust and ecutek upgrade. Can PeteC (or anyone) clarify what parts are required and at what cost for this power.

What approx bhp could I expect from just a SS backbox and ecutek3

Gary.

Fatman

Probably a full decat exhaust system and air filter as well. Why not ask them direct. Pete's always helpful and quick to answer emails.

Andy McCord

according th H&S's site centre & B/B gives 18BHP, no parts reqd for TEK3 as it is a remap of your existing ECU

hades

IIRC, they used to claim something like 265bhp for MY02 with Ecutek plus backbox (maybe airfilter too). The 285bhp was with full decat including up-pipe. Expect MY03 will be very similar.

My MY02 with a PE Ecutek (IIRC, about 0.05 bar lower boost than scoobysport's), scoobysport up-pipe and ported headers, plus APS sports cat system, Samco "y" hose and ITG filter got 284bhp/272lbft on PE rollers. Therefore, their figures are fairly realistic, although you may get lower on some rolling roads other than PEs.

hades

Also, thinking about it: The new WRX PPP is effectively backbox, centre de-cat and ecutek, which also claims 265bhp IRC?

The bigger advantage with doing the up-pipe/headers/downpipe is spreading the power. I got 260lbft+ from ~2800rpm onwards, plus 280bhp+ from 5800-6800. It's the spread of power that makes it much nicer in every day driving.

7 Foot

I think the figures in the adverts apply to STIs.

hades

STi with full decat and Ecutek will get loads more than that. Only one I encountered was just over 330bhp. ~285bhp is defo on the cards for a WRX with a full decat and ecutek (I have a car to prove it!), or as I said, the 03 WRX PPP is centre, backbox and ecutek for ~265bhp.

[Edited by hades - 6/16/2003 7:08:23 PM]

GaryCat

I put these question to Pete at Scoobysport and got answers almost immediately...

1) What parts (at what cost) would be needed to achieve this figure
2) Does it require cat removal and therefore exceed MOT CO2 emmisions?
3) Would it be substantially louder (i.e. a black flag at Bedford Autodrome)
4) What approx bhp/torque could I expect from an Ecutek3 with just a
backbox/air filter upgrade?


Reply from Pete...
===========================

1) The parts needed are silencer, two piece centre section, downpipe and up
pipe. Noise wise, it is legal at every UK track that we have attended (all
the main ones, incl Bedford) and by a reasonable margin.

2) Yes, but you can replace the centre cat in approx 10 minutes and it will
pass the test on this one cat.

3) No. It is louder but the 03 has excellent insulation and you will need
to open the windows to fully enjoy the sound.

4) Approx 260bhp, but it would be a shame to do this when so much safe
power is available.

========================

I worked out that the total cost of parts is £1777 including Ecutek3 and air filter. Take off 10% scoobyplus discount and you are exactly at the cost of the PPP. Not bad, very tempting.

Gary.

Pete Croney

Sorry Gary, only just seen this thread.

If you wanted to go for the backbox and map first, then upgrade to the rest of the system, there is no charge for upgrading the map to the full output as one later map upgrade is included in the cost

Sennadog 93

Garycat,

just to confirm what others have been saying...

My WRX 02 has the Ecuek 3 and Scoobysport BB and is producing 264bhp/230lb/ft on PE's rolling road.

I'm trying to decide which exhaust system to use now.

JIM THEO

I thought that WRX03 has no cat in the up-pipe and PPP includes only Intercooler "Y" hose, remap and back box but you said it includes also center section...
What are boost targets on PPP and what on Scoobysport custom remap with full decat as this is good indication of the way the power achieved?
JIM

PS: Sorry if hijack your thread mate

Pete Croney

Hi Jim

You are right that the 03 does not have a cat in the up pipe. Its still worth changing though.

The PPP includes a decat centre section.

Our boost target is 1.25 to 1.30 bar, depending on the spec and age of the car. Prodrive used to limit their PPPs to 1.20bar but I haven't logged an 03 PPP to see if this has changed.

clubby

Hades
"STi with full decat and Ecutek will get loads more than that. Only one I encountered was just over 330bhp."

My Sti7 with full Magnex decat (done at Magnex's factory) and Ecutek remap managed 314bhp at Powerstation (warm day 8 weeks ago).

GaryCat

That torque figure seems a bit low. My totally-standard MY99 produced 240bhp & 234lbs/ft at PE.

Gary.

hades

Clubby - not sure if you're arguing or agreeing? IIRC, the Sti7 I was thinking of was between 330 and 335bhp, at Power Engineering in the winter. Difference between different rollers, different days and ambient temperature could account for 20bhp. I'me still happy enough with 30bhp less than you, anyway.

JIM THEO

Let me guess guys, a catless exhaust with factory ECU is much more safety for the car due to standard boost etc and you don't avoid your warranty as you can easilly change the exhaust when it is necessary. Also you don't have to upgrade your fuel pump which is "must" in my opinion if someone goes for major modifications.
JIM

loscooby

Jim!

Sounds interesting regarding the fuelpump upgrade!

Have you got some facts to support your theory that an upgraded fuelpump is a 'must' when you mod the car?
Would be nice to hear some A/F figures about some of the cars that you have tuned so that we all can learn from your experience.

/L-O

[Edited by loscooby - 19/06/2003 15:01:30]

LoFi

uprated fuel pump and regulator could reduce injector duty cycles but on the tek3 maps being down for non-STi cars it's not really necessary IMO.

LoFi

JIM THEO

I don't know if it's necessary to post some delta dash log files here but even in standard form my new 03 WRX has higher injector duty cycles (3th gear - 96% at 5700rpms) compared with my old PPP'd MY00 (always less than 90%) that has also bigger injectors(440 > 380 on new model)!
This is of course my very humble opinion as reliability is first of my priorities, professionals may not agree!
JIM

PS: L-O I'll send you a DD log file if you send me your e-mail otherwise I'll post one here - just saw that turbosport is down, how can I post pictures then?

[Edited by JIM THEO - 19/06/2003 21:05:19]

WhiteWRX03

Sorry to break in this topic but could someone please explain some more on the issue on a catless uppipe in the model 03. I own a white wrx 03 and am thinking about changing the uppipe. However since Pete Croney stated this model does not have a cat in the uppipe I have some questions, maybe Pete Croney could explain this:

Does the original uppipe have something else that is restrictive e.g. NO cat but something else ?
If so, what would be the gain of changing the original uppipe to an aftermarket uppipe ?

Furthermore, it is said on the dutch forum's that the 03 really does have a cat in the uppipe en should best be replaced to get the max out of ecutek tuning.

So Pete and other posters, with respect to your experience on this matter and others on this board, could you please clarify ?

Tom, Netherlands

Fatman

The up-pipe had a catalytic convertor only on MY-2001/MY-2002 cars. Earlier and later cars don't have that cat. Replacement up-pipes exist for catted and uncatted OE up-pipes.

The only real benefit of replacing one uncatted up-pipe with another uncatted up-pipe is that of the pipe dimensions. I believe that the turbo inlets often are of a larger diameter than the up-pipe diameter. Therefore more gas can flow to the turbo by fitting a wider-bore up-pipe.

I'm sure a vendor would be quite happy to point out the benefits of purchasing their aftermarket product, if you ask them!

Pete Croney

Fatman is correct.

The 03 up pipe is very similar to the pre 01 up pipes in that it is 40mm internal diameter and has a nasty trombone type slip joint, just before the end that feeds the turbo.

The turbo inlet is 48mm, exactly the same size as our replacement up pipes. This means that the gas has virtually no turbulence as it enters the turbo, giving a better push throughout the range.