First of all, have you got an induction kit or the standard airbox? Swapping for a better induction kit will make the most of your exhaust mods.

On the power front it could be ANYTHING. Someone would have to check the car over thoroughly.

One question though, and I stand to be corrected here but, if you have fitted an ECU from a 280bhp car would this not have had bigger injectors? If you are using an ECU that thinks its on 440 squirters and you are using 380s (for example) maybe it's causing the car fuelling problems????? You'd have to find out as I'm not sure.

I'm concerned that you said the unichip "wouldn't work". Have you removed it then?

Once you know your fuelling is sorted and the ECU/ injectors are correctly paired, check that you are running rich enough and then maybe consider using an octane booster (NF is good) and up the boost a little (1.1 or 1.2 bar). Be careful doing this though as it's easy to lean things out too much and the engine will expire.
Get an air/fuel meter or EGT and get the car checked for fuelling at a rolling road. Then maybe lightened pulleys or something, should give you good gains. Uprating the fuel pump is a good idea too.

Check out this website for ideas

www.jap-innovations.co.uk

Rich


[Edited by RICH WILD - 7/2/2002 9:41:36 AM]

 

Please help or 4K down the drain
1994/5 Jap wagon was 212 BHP
Owned car for 3 years thought I would give the girl a treat
Fitted downpipe and backbox--235bph
Unichip + HKS boost con
Still won't go above 240 BHP but is giving 167 at the wheels.

HELP NEEDED

Thanks John

 

Your wagon is pushing about average for its year, dont be too depressed as upto and including 96 wagons only pushed 240PS (approx 237bhp) on 100 ron fuel.
Id suggest that you get your car remapped or have a 95 chip put in from a saloon rather than a wagon if you want more power

Tony

 

Hi Tony
I have a Unichip and it didn't work so they suspected the ECU
A secondhand one from 280Bhp car is fitted at the moment runs well
but no joy on the bhp.

Thanks for the reply

John

 

Are the ECU's difference in a wagon to a saloon then?

I assumed they were the same..

JGM MY96 Wagon

 

HI,

What boost are you running?

Rich

 

Hi RICH
I am running 1 bar to achieve the 240 bhp
but it was 237bhp with just the down pipe and back box running at standard 0.6 bar
smokee

 

Sorry rich
I meant the boost and unichip didn't increase the bhp going from
0.6 to 1 bar expected an increase
It does have the smaller injectors but when tuning on rolling road
was rich at full rev, so set to -2
I am beginning to think cam profiles and compression may be
different on a wagon.

 

I'm inclined to say that ECU is your problem. If it is mapped for 440s, and you are running 380s, it can't possibly be running to its full potential. You'll probably be running FAR too rich which will sap your power as much as if you were running too lean.

There is absolutely no need to change the standard ECU unless you are going for BIG power. I proved that with 330bhp from a standard UK ECU.

Correct me if I'm wrong anyone.

cheers

Rich

Cheers Rich

 

Hi RICH
I asked about injectors But in the mapping on the rolling road it was running rich and m took some off
The ECU was changed because there was a fault and it wouldn't load onto the laptop
Power eng and Power sta thought it was the ECU and this is why a new one was fitted { and remapped )
Just can't make my mind up on what to do next { if anything }

Thanks
John

 

injectors for sale here: http://www.scoobynet.co.uk/bbs/threa...hreadid=110202

 

Christian,

phase2 injectors will not fit the phase1 fuel rails without some modification.

John,

I don't see as you have any problems at the boost level you are running. When I first had my Unichip fitted to my MY94 wagon I achieved 228lb/ft & 245bhp running 1.1bar with decat centre and ScoobySport backbox. I then fitted a ScoobySport downpipe and upped the boost to 1.15bar which then gave 235lb/ft & 256bhp.

A few weeks later I took the car for a run on Power Engineerings RR with very similar weather conditions and their rollers gave figures of 260lb/ft & 299bhp what does it all mean!

Don't worry about the RR figures they mean very little it's what the seat of your pants feels that counts.
Did you do a run on the rollers before fitting the Unichip for a direct comparison?

 

Hi MO
Yes First Run standard 212 bhp
Down pipe & backbox 238 bhp
Then left power eng and had Unichip HKS Boost & afc
Had no significant effect on BHP
Back to power eng had ECU replaced and mapped
Still 240 BHP
But must say the car has more pull am just confused about the BHP
Regards John

 

IIRC, The older wagons ran a higher compression ratio than the equivelant saloons. This would make a very significant difference to the map requirements. Simply slotting in an ecu from a 280ps car is not a bright idea.

Moray
bbs.22b.com

 

christians cars has phase one 440cc injectors.

I believe as moray said, the compression ratio of the early wagons was in fact 8.5:1.

There is no way I would just swap ecus and hope for the best.

In this situation I would ditch the unichip and start off from scratch with a link and some 440 injectors.

Perhaps even consider a better fuel pump too, as these days I think it is the safest mod to buy before playing with any fuelling or boost.

raising boost pressure by 0.4 bar should yield more power no question.

 

Thanks for the help guys

Have to mention Mervyn did all the mapping really put himself out for me. I Don't think there is much he doesn't know about ECU mapping, P Engineering & Merv are well respected in the industry.
So I think my ECU is OK.
From your suggestions I think I'LL look at the injector side off things, any sujestions on who to see.

John

[Edited by smokee - 7/7/2002 4:19:25 PM]