Remap after main cat removal

[Nvy]

Hey guys,
Any idea if the ECU will over fuel if i remove the main cat? Lambda fooler will be fitted as well so it wont throw codes but unsure if i need any mapping?

[shnazzle]

Yes.
From experience. Yes
But stock ecu will compensate

[Nvy]

Yes.
From experience. Yes
But stock ecu will compensate

I know that in general we can pick up some power down low but i dont want to pay for full mapping session now and after the turbo once more Ill try with stock ECU first.

[Ardent]

@Nvy

I believe the stock ecu is unmappable. So don't waste your money.

Assuming your are running a stock ecu.

[Nvy]

@Nvy

I believe the stock ecu is unmappable. So don't waste your money.

Assuming your are running a stock ecu.

Hey,
I do have dastek and Link g4 storm, i want to use the link but it will need full session on the dyno coz i couldnt find a base map for it online. The dastek i dont like to be honest but it came with the turbo kit that i purchased.

[shnazzle]

@Nvy

I believe the stock ecu is unmappable. So don't waste your money.

Assuming your are running a stock ecu.

Hey,
I do have dastek and Link g4 storm, i want to use the link but it will need full session on the dyno coz i couldnt find a base map for it online. The dastek i dont like to be honest but it came with the turbo kit that i purchased.

Go for the link mapping. There will be a 1zz map out there. In the worst case, @tomaky has one.
Don't even consider plugging that Dastek in

[Nvy]

@Nvy

I believe the stock ecu is unmappable. So don't waste your money.

Assuming your are running a stock ecu.

Hey,
I do have dastek and Link g4 storm, i want to use the link but it will need full session on the dyno coz i couldnt find a base map for it online. The dastek i dont like to be honest but it came with the turbo kit that i purchased.

Go for the link mapping. There will be a 1zz map out there. In the worst case, @tomaky has one.
Don't even consider plugging that Dastek in

I know, i just keep it in case i want to sell the kit. Im planning to get 82mm 10:1 with dartons and some head mods and then the mapping will come in handy but before that im not sure i can justify 300 euros for that. It will be in preparation for the turbo but not sure when the funds will allow.

[1979scotte]

@Nvy

I believe the stock ecu is unmappable. So don't waste your money.

Assuming your are running a stock ecu.

Hey,
I do have dastek and Link g4 storm, i want to use the link but it will need full session on the dyno coz i couldnt find a base map for it online. The dastek i dont like to be honest but it came with the turbo kit that i purchased.

Go for the link mapping. There will be a 1zz map out there. In the worst case, @tomaky has one.
Don't even consider plugging that Dastek in

I know, i just keep it in case i want to sell the kit. Im planning to get 82mm 10:1 with dartons and some head mods and then the mapping will come in handy but before that im not sure i can justify 300 euros for that. It will be in preparation for the turbo but not sure when the funds will allow.

How much power are you looking to make?
Sleeving the block is very extreme.

[Nvy]

A bit over 300 at the fly but want to make a bit more power over stock in NA form and it wont happen if no big bore or high compression pistons are fitted. Thats why i lean toward a big bore and then turbo instead of high compression.

[shnazzle]

I reckon once you enter the world of sleeves, low comp pistons with all associated rods, bearings, bolts, etc, you're into the world of K20 money. And once you're in that world, it is your oyster as the amount of mods is so much larger and cost effective.

300hp at the wheels, never mind flywheel, becomes easy peasy and entirely reliable.

300hp at the flywheel with 1zz and you're putting so much strain on the thing you're asking for trouble and big regular bills.

[Nvy]

I reckon once you enter the world of sleeves, low comp pistons with all associated rods, bearings, bolts, etc, you're into the world of K20 money. And once you're in that world, it is your oyster as the amount of mods is so much larger and cost effective.

300hp at the wheels, never mind flywheel, becomes easy peasy and entirely reliable.

300hp at the flywheel with 1zz and you're putting so much strain on the thing you're asking for trouble and big regular bills.

There seem to be quite a lot of opinions on everything. I know k engines are fine but they still need to be build so idk, ill go 1zz me thinks. Cash and so on is irrelevant i think once you have a project car Selling and buying a new faster car is on the table too but i doubt ill find something as good handling as the 2.

[shnazzle]

Fair enough. In that case, carry on and your original question had been answered
Stock ECU will just adjust. Depending on the quality of the cat, you may or may not get p0420 for cat efficiency

[Nvy]

Fair enough. In that case, carry on and your original question had been answered
Stock ECU will just adjust. Depending on the quality of the cat, you may or may not get p0420 for cat efficiency

Thanks Im just tired of opinions, i finally decided to turbo my 1zz after so many back and forth and thats the direction that im going. I asked 2 weeks ago on facebook if 6k$$ would be enough for k20 but ppl said its not and there is far too much things to be sorted. I believe it will be enough as the labour around here is cheap and it will be a nice project for the winter, Im going with 1zz for its simplicity and i intend to build it with forged stuff. Everything will work and i wont be bothered to register the car with different engine coz its a bit hard around here.

[1979scotte]

No seriously modified car is simple.
There will be problems everywhere and it will cost way more than you think.
If you like NA don't rule out a 2gr.
Will it be better than that boxster or elise in my current frame of mind I'm not so sure.

Best of luck.

[Call the midlife!]

Just throwing this into the mix but when I was bouncing ideas around for my build it was suggested by the place I got my cams that a thicker head gasket might be feasible to lower the compression without boring out the sleeves.
I never got any further than the conversation but feel free to do your own investigations..[emoji851]


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[1979scotte]

Just throwing this into the mix but when I was bouncing ideas around for my build it was suggested by the place I got my cams that a thicker head gasket might be feasible to lower the compression without boring out the sleeves.
I never got any further than the conversation but feel free to do your own investigations..[emoji851]


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Machining the head will lower compression.

[Call the midlife!]

Just throwing this into the mix but when I was bouncing ideas around for my build it was suggested by the place I got my cams that a thicker head gasket might be feasible to lower the compression without boring out the sleeves.
I never got any further than the conversation but feel free to do your own investigations..[emoji851]


Sent from my iPhone using Tapatalk

Machining the head will lower compression.

It's late, I've been 3 steps forward and 2 back all day trying to get the engine back in and I've had a VERY large scotch.
When you say machining the head do you mean making the crowns(?) deeper or skimming it? I thought you needed a bigger volume to lower compression?


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[jvanzyl]

K20 is possible for 5.5k Miles has all the info...

Other than that you could just do the 2ar-fe swap cos those engines can take loads of power and the guy has cracked the ECU for that engine..


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[1979scotte]

Just throwing this into the mix but when I was bouncing ideas around for my build it was suggested by the place I got my cams that a thicker head gasket might be feasible to lower the compression without boring out the sleeves.
I never got any further than the conversation but feel free to do your own investigations..[emoji851]


Sent from my iPhone using Tapatalk

Machining the head will lower compression.

It's late, I've been 3 steps forward and 2 back all day trying to get the engine back in and I've had a VERY large scotch.
When you say machining the head do you mean making the crowns(?) deeper or skimming it? I thought you needed a bigger volume to lower compression?


Sent from my iPhone using Tapatalk

Definately not skimming that would slightly raise compression.
Basically you increase the volume of the cylinder head by removing some material from the combustion chamber.

[Call the midlife!]

Just throwing this into the mix but when I was bouncing ideas around for my build it was suggested by the place I got my cams that a thicker head gasket might be feasible to lower the compression without boring out the sleeves.
I never got any further than the conversation but feel free to do your own investigations..[emoji851]


Sent from my iPhone using Tapatalk

Machining the head will lower compression.

It's late, I've been 3 steps forward and 2 back all day trying to get the engine back in and I've had a VERY large scotch.
When you say machining the head do you mean making the crowns(?) deeper or skimming it? I thought you needed a bigger volume to lower compression?


Sent from my iPhone using Tapatalk

Definately not skimming that would slightly raise compression.
Basically you increase the volume of the cylinder head by removing some material from the combustion chamber.

Assumed that's what you meant, same principle as they were suggesting with the Cometic gaskets just less work [emoji23]


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[1979scotte]

Just throwing this into the mix but when I was bouncing ideas around for my build it was suggested by the place I got my cams that a thicker head gasket might be feasible to lower the compression without boring out the sleeves.
I never got any further than the conversation but feel free to do your own investigations..[emoji851]


Sent from my iPhone using Tapatalk

Machining the head will lower compression.

It's late, I've been 3 steps forward and 2 back all day trying to get the engine back in and I've had a VERY large scotch.
When you say machining the head do you mean making the crowns(?) deeper or skimming it? I thought you needed a bigger volume to lower compression?


Sent from my iPhone using Tapatalk

Definately not skimming that would slightly raise compression.
Basically you increase the volume of the cylinder head by removing some material from the combustion chamber.

Assumed that's what you meant, same principle as they were suggesting with the Cometic gaskets just less work [emoji23]


Sent from my iPhone using Tapatalk

I was advised against decompression plates or thick gaskets.

[Call the midlife!]

Just throwing this into the mix but when I was bouncing ideas around for my build it was suggested by the place I got my cams that a thicker head gasket might be feasible to lower the compression without boring out the sleeves.
I never got any further than the conversation but feel free to do your own investigations..[emoji851]


Sent from my iPhone using Tapatalk

Machining the head will lower compression.

It's late, I've been 3 steps forward and 2 back all day trying to get the engine back in and I've had a VERY large scotch.
When you say machining the head do you mean making the crowns(?) deeper or skimming it? I thought you needed a bigger volume to lower compression?


Sent from my iPhone using Tapatalk

Definately not skimming that would slightly raise compression.
Basically you increase the volume of the cylinder head by removing some material from the combustion chamber.

Assumed that's what you meant, same principle as they were suggesting with the Cometic gaskets just less work [emoji23]


Sent from my iPhone using Tapatalk

I was advised against decompression plates or thick gaskets.

Yup. Same here when I asked around other people who don't actually sell them, nobody said it WOULDN'T work, most just said they wouldn't want to try it.


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[Nvy]

K20 is possible for 5.5k Miles has all the info...

Other than that you could just do the 2ar-fe swap cos those engines can take loads of power and the guy has cracked the ECU for that engine..


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Hey while the 2ar is a good choice i cant source it easy. On the other note i can source k24 for less than 500 quids and with tranny and all the stuff around it for 800.

Who is Miles and where is the info so i can read it?

[Carolyn]

Just throwing this into the mix but when I was bouncing ideas around for my build it was suggested by the place I got my cams that a thicker head gasket might be feasible to lower the compression without boring out the sleeves.
I never got any further than the conversation but feel free to do your own investigations..[emoji851]


Sent from my iPhone using Tapatalk

It's late, I've been 3 steps forward and 2 back all day trying to get the engine back in and I've had a VERY large scotch.
When you say machining the head do you mean making the crowns(?) deeper or skimming it? I thought you needed a bigger volume to lower compression?


Sent from my iPhone using Tapatalk

Sent you a PM regarding getting the engine in.

Machining the head will lower compression.