Raggo

iTrader: (1)

Hi people. I'm new on here so forgive me if there is already answers to this but I can't find any. Basically I bought a 98 impreza gl which has been converted to a sti (body work, suspension etc) and has been fitted with a p1 engine. It also has a td05-18g turbo and is running a j2 ecu which is apparently from a JDM sti type r. The thing is, I got it dyno'd and it produced 245hp at 1bar and didn't want to go above this as at the peak of the power there was a tiny flat spot, which the dyno operator said was the ecu boost limiter/knock sensor kicking in. It was still running the top mount and standard down pipe at the time but has now been changed to a Decat downpipe and toyosport fmic. I was expecting at least 280hp but didn't get it. Any ideas on why it was only producing that power? Fueling was spot on by the way :-)
Cheers in advance people

KAS35RSTI

iTrader: (73)

Has it been mapped for the mods?

yabbadoo4

iTrader: (8)

it will need mapping i suspect bud, especially with the changes you have made.

p1kris

iTrader: (3)

Hi bud, standard it should boost at 1.1 bar, + were you running sti top mount? Also i reckon you arent getting the best out of the 18g at 1bar! try your fmic, decat, boost at 1.5 bar and you should be getting 290ish if there is a flat spot then fueling or intake might be out?

+ bob rawle remap will sort it!

Raggo

iTrader: (1)

Na I don't think it's mapped. I only want 300ish hp and thought that the ecu and engine would produce nearly that as standard. Is my ecu mappable? as I've heard some are and others aren't but as I'm new to scoobys I'm starting to get mega confused with all this v1 v2 etc.

Raggo

iTrader: (1)

And yes it was running the sti top mount. The dyno operator wouldn't go above 1 bar as he thought the knock sensor or ecu was limiting power at the very peak. What do you mean the intake may be out? The dyno lad said Fueling was spot on.

p1kris

iTrader: (3)

I meant - using the rite intercooler, too low boost for the 18g etc. If your using a j2 ecu , correct me if im wrong but is that from 99/2000 scoobyas my simtek is a j2? if it is then you can get a ecutek remap for about £500. This most defanately will be why its down on power. You need a remap everytime you change or upgrade the sytem.

p1kris

iTrader: (3)

v1 = version 1, v2 = version 2 etc.

what year is yours? mines a 2000 P1 (version 5/6)

KAS35RSTI

iTrader: (73)

P1's are not classed as V5/6, only the Imports are.

snake1906

iTrader: (4)

sounds like the previous owner threw a load of perts together exspecting 1 miiiiiiiiiiiilion bhp but didnt really have a clue,you say the dyno operator wouldnt go above 1 bar? how was he adjusting the boost if it wasnt being mapped?

Raggo

iTrader: (1)

Lol. I get that v1 is version 1 etc. but I don't know the differences are. The car is a 98, engine is ej20bug from a p1 (although I'm not sure on the inlet) and the ecu is a jdm sti type r ecu which I think is v5 from what I've looked up before.

snake1906

iTrader: (4)

who cares what there classed as?????/ that is what they are!

CREWJ

Sounds like a collection of random parts

KAS35RSTI

iTrader: (73)

You might aswell call it a MK4 Golf then

Raggo

iTrader: (1)

Manual bleed valve. I don't like it but can't afford an apex-I yet. The cars got some other valves and vacuum pipe from the turbo running to the drivers side of the engine bay. But I don't know what this does. And yes I think your right about the throwing parts together comment. That's why the first thing I did was dyno the car to make sure everything is at least running safe and now I'm tryin to fix any problems and figure out exactly what's what on this car

snake1906

iTrader: (4)

hmm ok im not putting you or your car down in anyway as im sure most of us have been in situations like this but you should do is take it to a reputable mapper/tuner the 1st thing they,l do is bin the manual boost controller,dont touch it! your car really needs a good look over by some1 in the know m8 its ok us saying its this its that but the reality is its probably all of it combined

Raggo

iTrader: (1)

Well I do plan on taking it to a mapper but £££ is low and I want to get everything sorted and running as well as I can. plus there's no point going to get a car mapped if there are problems with the car. I'd be fine if it was a 200sx but scoobys are new to me. And so confusing

snake1906

iTrader: (4)

you need the tuner/mapper to look over the car before it gets mapped i understand about money but it could end up costing more if left,for some1 who knows what there doing it will be an hours labour or free for diagnosing at the bigger companies

p1kris

iTrader: (3)

Ohh sorry, didn't mean to step on the toes of the Jdm crew! What are they then my99/00?? Let's be honest tho...... They are v5/6!

CREWJ

Get it mapped before you drive it properly. Keep off boost until you get it sorted other wise it'll probably be bye bye engine.


Nope it's a P1

Only JDM cars have versions.

Raggo

iTrader: (1)

I suppose. Anyone know where I could take it? I'm from Bedford which is next to Milton Keynes. I know I can get it mapped at Marlin Motorsport in Milton Keynes but the lad who does the dyno's doesn't do the mapping on subarus. He gets someone else in, but I don't know who.

Raggo

iTrader: (1)

And @ crewj, why would the engine pop? It's be rolling roaded and everything was spot on. Just a mix of bit. And would a Decat and fmic make that much difference that it's unsafe to run without a map? My s14a was fine without a map but awesome after it was chipped :-)

snake1906

iTrader: (4)

who ever was doing your dyno? yeah dont take it back there! sorry i dont know what tuners are close to you maybe a seperate thread will help? good luck fella hope you get it sorted

snake1906

iTrader: (4)

Nope it's a P1

Only JDM cars have versions.[/quote]


im not sure theres a way to help the sneters understand yes it is a p1 well done but the p1 is a v5 v6

p1kris

iTrader: (3)

Zen performance isn't that far from you - I think

p1kris

iTrader: (3)

im not sure theres a way to help the sneters understand yes it is a p1 well done but the p1 is a v5 v6[/QUOTE]

I know, it's no good! I can't see why people think the're not v5/v6! Im gonna look into this! Find it in writing, prob some chav was jealous that the fact he didn't have a p1, so then gave all the jdms versions!

Raggo

iTrader: (1)

So basically there's nothin I can do with the car and just take it to a tuner? This is such a pain as I want to get using the car properly but can't at the moment. Best get searching for mappers near me. Is my ecu mappable though?
And @snake, why shouldn't I go back to Marlin for a dyno?

snake1906

iTrader: (4)

you can call it whatever you want but if you go around saying a p1 is a mk4 golf then you may get some strange looks

snake1906

iTrader: (4)

because they were obviously messing with your manual boost controller = bad i would let them no where near my car its not a fiesta it needs to be mapped to run the boost not just wack it up and see what happens,as i alreadt said get it diagnosed 1st then you can sort the bits if you prefer then take it back to get mapped

just read your post again thats fine taking it for a dyno run but dont let them touch anything

p1kris

iTrader: (3)

You shouldn't go for a dyno until she's set up properly by a reputable mapper, set it up first! When you squeeze so much power from a 2.0 things need to be spot on, even slight air/fuel ratios out can melt a piston!