Remapping.

Ok guys.

Whats the score with remapping. ive only just got the scoob and with the few mods i plan i think it will need a remap.

Is a new ECU needed for a remap?

I have seen advertised stage 1/2/3/4 ECU's

Logically in my head, all it should be is a decent ECU, which can be "Mapped" for whatever conditions suit the engine best. However its being sold like you need a different ECU, as if they cannot be programmed.

Shouldnt the standard ECU effectivly adjust itself for best performance anyway? such as the way you drive and the fuel you use? Or do mods require much bigger changes than the std ecu can deliver.

Is there a cheap form of remap, or might i just as well go for the simtek ecu 800 quid from the off?

I plan on basically doing full decat air filter and maybe some kinda dump valve. Possible headers also.

As i say, im totally new to all of this, only just bought my first scoob

 

Some subarus cannot be remapped and you'll need a piggy-back or new ecu.

What model do you have?

If you have a newage. You can get an Ecutek3 remap. Will cost in the region of £600 (which buys you the license). Subsequent remaps are about £200.

You could also consider OpenSource remapping.

If the simtek would've been available when i first mapped mine, i would've got one. It was only really Gems & Motec then.

 

To add; remapping gets the best out of your modifications, all keeping within safe parameters.

 

Version 4 98 JDM STI.

It seems like an awful lot of money for not much work?

 

Is mapping worth it for just a changed exhaust de-cat, n air filter?

 

the ecu monitors det and will retard the timing, most of the time, if it occurs.. but this will reduce power and if it is still lean it could still cause engine damage.

your ecu on a 98 sti will use the lambda sensor in the downpipe to alter the fuelling on cruise and idle but on boost it just uses the tables for fuel and ignition which were developed on the standard car.. it won't adjust the fuelling for the mods only remove timing if it notices det.
The boost may increase due to the decat which the ecu won't be mapped for.

With the car remapped and setup properly (on 97 and 98 you are looking at Apexi PowerFC or SimTek etc) then the whole ignition, fuel and boost is tailored for you exact mods etc.. so you get the best throttle response, smoother to drive, better mpg, more power and torque possible safely out of you setup.

Simon

 

Is there much of a price difference in the ECU's?

Also does the act of mapping itself require a recommended RR?

 

Think the Sim-tek etc are around £1400 if i remember, people like Simon, Bob R will map your car on the road, some use RR or both..

 

I would say a the price of a good map is cheaper than a new engine plus it will be better alround and Jolly Green Monster did mine and i am very happy

 

Very important if you want to get the most out of your scoob as safely as possible. Simtek has some nice features to play with like individual cylinder settings.

 

As it says the ECU will retard if it notices det - which means by the tiem it does it then the car is already experiencing problems which isn't great. A good map should prevent it happening full stop.

You will probably find quite a power hike and improvment in the car. It seems expensive but in terms of bang per buck it is one of the most cost effective things you can do.

5t.

 

£100+VAT difference between Apexi and SimTek

www.jollygreenmonster.co.uk

Doesn't need to be done on a RR no.. depends on the desired outcome and power level.
Don't assume just because someone has an RR they know how to map.

Simon

 

Thing is, i would like to change the zaust n air filter. But adding a remap on will push cost from 500 -2k. I really dont want to put the engine at risk.

What safe mods could i do without requiring a remap?

remove one cat and back box with greencotton panel filter?

Not after pushing big power yet. Just want a little more aggresive exhaust, nothing too loud or boombing. And preferably some pops n occasional flash of flame.

What would you suggest? Im more of a subtly modder. I do not want a 5" nur spec r. Was thinking 3" vortex.

 

The same could be said for someone who road maps, yes ?

 

I am sure you too have had to correct some of the cowboy stuff done..
holes cut in pipes or actuator wound right in and hitting fuel cut, obvious faults ignored etc etc.. but establishments who have the equipment and therefore everyone assumes they can use it.. it was not a dig at RR's, there is no issue here.

The OP said
he needs recommended tuning / mapping, be that with or without a RR, with or without a west country accent, london accent, scottish accent..

chill out mate!

Simon

 

Mate, ive got a version 4 sti so ive looked into all this stuff.

I knew from my previous scoob that as soon as it comes off the boat no opening it up till its been mapped up to deal with our lesser juice. I spoke to Andy forrest and had a look on his site, his recommendation was the apexi Power FC, went for it and havent looked back.

Awesome wee bit of kit, well worth the money and peace of mind that the engine is happy with itself.

Give andy a buzz od check his site for more info

 

jolly green monster all the way!!!!

 

If you don't want to go the remap route, get the backbox and get some suspension / brakes mods. You'll drive faster with those without increasing the BHP/LB.

 

ok. 99ron tesco juice not good enough? My car has been run for the last 10 years without issue?

Worth using an octane booster?

Dont mean to be pesimistic, but people who make their living from mapping are clearly going to advocate it in every way possible.

Whats the cheapest decent map i can get? If its 5-600 i might as well go the whole hog and get the simtek with antilagg (me loves the sound) and launch control.

Im primarily after engine safety, a nice sound, and depending on track performance i can start on the brakes.

The suspension seems stiff and low enough, virtually no roll, however i have yet to track.

I may be able to get the equipment at trade price which may hopefully knock a hundred or so off any cost.

How many of you run 1de cat back box and air filter without a remap? 1 decat should keep the backpressure but increase sound correct?

I really need to get along to a show/meet and talk this all through with people.

 

The issue on mine (and i suspect it will be for yours) is that the cat holds one of the main sensors for the car. Removing it often causes CEL or engine mangament light issues so bit risky.

I got a good 50 bhp from mine but you should have more to start with being a sti (mine is a wrx) with just a single cat delete a back box and uprated intercooler hoses.

Added a filter since then and not noticed any difference at all so can't recommend them really.

Full decat and a good map might see you up near 300 without having to make any real mods to the car. Keep the cats for MOT though.

5t.

 

what you do to get rid of the warning light then? What the sensor do? You cut a hole in the pipe n fit it. Which cat to get rid of, i guess the most rear one.

You get any pops n bangs with 1 cat in place?

 

tesco 99 hasn't been around 10 years but it is just as good as shell vpower - a tiny bit.... ie. vpower is best but tesco 99 a close second.

Engine builders tell you it is not needed.. lol

buty a secondhand Apexi PowerFc for about £400 and then £250+VAT to get it mapped and job done..

Simon

 

turned off within the map.. but 97/98 doesn't have this problem.. it will not put the light on for emissions when you decat it.

it will pop and bang but not usually as much as when fully decatted.

Simon

 

cmaster clear your PMs - can't reply

5t.

 

[QUOTE=

buty a secondhand Apexi PowerFc for about £400 and then £250+VAT to get it mapped and job done..

Simon[/QUOTE]

Cool i also am picking up a 98 JDM sti with exhaust full de-cat and will be getting it mapped in the new year am skint with bloody Christmas coming up or would get it done now so my question is do you sell the 2nd hand Chips or just the new ?

 

sorry man. Only have a few Pms. they should increase that!

cleared now

 

Colin,

would love to hear a video of your scoob if you have one?

And yeah i didnt mean ran the last 10 years on 99. It was imported 10 years ago new with one owner who has ran it since. dont know on what fuel, but whatever it was it seems to have done the trick.

 

ok mate well im looking forward to it aswell never got a video of the old scoob the mrs stacked within two months so fingers crossed this 1 will last longer and ill get the noise you want to hear posted