140mm Pulley with Blackbox/FCD
140mm Pulley with Blackbox/FCD
As some may know, I have a DIY supercharger kit, using the 130mm(ish) pulley from a Merc 230 water pump. I was wondering, what happens if you use a 140mm pulley on the standard management/Blackbox? Will it run or cause a lot of problems?
I have found a 140mm pulley which will suit my setup, but I'd like to know what others have found using a 140mm pulley with the TTE setup, boost pressure is to be expected?
Any help/edvice would be great
Hey Guys,
As some may know, I have a DIY supercharger kit, using the 130mm(ish) pulley from a Merc 230 water pump. I was wondering, what happens if you use a 140mm pulley on the standard management/Blackbox? Will it run or cause a lot of problems?
I have found a 140mm pulley which will suit my setup, but I'd like to know what others have found using a 140mm pulley with the TTE setup, boost pressure is to be expected?
Any help/edvice would be great
The black box would continue stopping you hitting the fuel cut but id seriously suggest installation of an air fuel ratio gauge to see what the fuellings like at the top end.
I would suggest it would be too lean and so you'd need some like an emanage blue at least to add a bit more fuel to the setup.
![[Image: LexuS-Copy.jpg]](http://i65.photobucket.com/albums/h204/Sparkystav/LexuS-Copy.jpg)
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sparkystav
28-04-2019, 12:55 PM #2Depends what boost you reach.
The black box would continue stopping you hitting the fuel cut but id seriously suggest installation of an air fuel ratio gauge to see what the fuellings like at the top end.
I would suggest it would be too lean and so you'd need some like an emanage blue at least to add a bit more fuel to the setup.
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sparkystav Depends what boost you reach.I agree. You wouldn't hit fuel cut, but you would probably run lean at the higher revs if your maximum boost is a lot more than 0.3 bar.
The black box would continue stopping you hitting the fuel cut but id seriously suggest installation of an air fuel ratio gauge to see what the fuellings like at the top end.
I would suggest it would be too lean and so you'd need some like an emanage blue at least to add a bit more fuel to the setup.
As Stav mentioned, a proper AFR is always a good idea if you're increasing the boost pressure.
P.Lindblom
28-04-2019, 01:31 PM #3Sparkystav Depends what boost you reach.I agree. You wouldn't hit fuel cut, but you would probably run lean at the higher revs if your maximum boost is a lot more than 0.3 bar.
The black box would continue stopping you hitting the fuel cut but id seriously suggest installation of an air fuel ratio gauge to see what the fuellings like at the top end.
I would suggest it would be too lean and so you'd need some like an emanage blue at least to add a bit more fuel to the setup.
As Stav mentioned, a proper AFR is always a good idea if you're increasing the boost pressure.
I Recommend the aem one myself.
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sparkystav
28-04-2019, 01:50 PM #4Yep get a proper wideband afr sensor fitted and do a couple of pulls with the new pulley. You may find the fuelling is acceptable, but either way it's a useful tool to protect a modified engine.
I Recommend the aem one myself.
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
While we're on about the fueling side of things, would bigger injectors help to add more fuel? I have searched for months on the internet, but I cannot find a suitable site to describe how the IS200 injector circuit works exactly. Has anyone got any documents etc to read up on??
Please, feel free to correct me, but the way I understand it is the injectors are rated to deliver fuel at so many cc's per hour (i think). If I put slightly bigger injectors in, and since the injectors are pulse operated, the length of pulse will still be the same, but the amount flowing through will be more? Obviously, thats in theory if the fuel pump keeps up. The fuel pump and FRP may have to be upgraded aswell?
If thats the case, only real danger is the car over fueling (which the extra fuel would effectivly cool the engine) opposed to the car running lean (which would get dangerously hot possibly causing engine failure).
And Finally, does anyone know exactly what the 3 Lambda sensors do in the exhaust? I am sure I have read that the 2 in the manifold control the fueling etc, and the main one is for monitoring only? Is that the true? The reason I ask is because I currently have a Camcon on the car (which hasnt been used since it was 'charged) and after reading various guides on the net, it was decided to wire it to the main Lambda sensor, which, thinking about it may be doing sweet F.A?
Sorry, I know I've asked a lot, but if you don't ask, you don't get told.
Thanks for you help and advice guys - I'll have to invest in a AFR Gauge come payday, I take it a new bung will have to be welded in? Where is the best place for this? Im assuming after where the main cat is/was? Somewhere near the Main lambda sensor?
While we're on about the fueling side of things, would bigger injectors help to add more fuel? I have searched for months on the internet, but I cannot find a suitable site to describe how the IS200 injector circuit works exactly. Has anyone got any documents etc to read up on??
Please, feel free to correct me, but the way I understand it is the injectors are rated to deliver fuel at so many cc's per hour (i think). If I put slightly bigger injectors in, and since the injectors are pulse operated, the length of pulse will still be the same, but the amount flowing through will be more? Obviously, thats in theory if the fuel pump keeps up. The fuel pump and FRP may have to be upgraded aswell?
If thats the case, only real danger is the car over fueling (which the extra fuel would effectivly cool the engine) opposed to the car running lean (which would get dangerously hot possibly causing engine failure).
And Finally, does anyone know exactly what the 3 Lambda sensors do in the exhaust? I am sure I have read that the 2 in the manifold control the fueling etc, and the main one is for monitoring only? Is that the true? The reason I ask is because I currently have a Camcon on the car (which hasnt been used since it was 'charged) and after reading various guides on the net, it was decided to wire it to the main Lambda sensor, which, thinking about it may be doing sweet F.A?
Sorry, I know I've asked a lot, but if you don't ask, you don't get told.
For wiring diagrams search for bahamutcars workshop manual. There's an online one for the IS there.
Your theory about the injectors is correct but the fuel increase I doubt would be correctly measured to the fuel increase. Yes the car would be running rich which isn't immediately harmful but will damage the rings by leaking through in time.
Updating the fuel pump is simple you need the Walbro kit for the jdm supra I think. As for the FPR that's in tank so can't be changed. You'd need to fit a full return line and aftermarket FPR to adjust fuel pressure.
But considering I'm only doing that now and still don't really need to, I just wanted to, I doubt your car will need it yet.
And the lamba sensors your right, the front 2 read each bank and adjust the fuelling accordingly, the rear ones just decides if the cat is working correctly or not.
Hope all that helps, I'm massively hungover but I think it's all accurate lol
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sparkystav
30-04-2019, 03:05 AM #6Right mate, the wideband needs fitting in the exhaust more than 2 feet away from the turbo/engine. The old lamba point after the cat if that's been removed is perfect.
For wiring diagrams search for bahamutcars workshop manual. There's an online one for the IS there.
Your theory about the injectors is correct but the fuel increase I doubt would be correctly measured to the fuel increase. Yes the car would be running rich which isn't immediately harmful but will damage the rings by leaking through in time.
Updating the fuel pump is simple you need the Walbro kit for the jdm supra I think. As for the FPR that's in tank so can't be changed. You'd need to fit a full return line and aftermarket FPR to adjust fuel pressure.
But considering I'm only doing that now and still don't really need to, I just wanted to, I doubt your car will need it yet.
And the lamba sensors your right, the front 2 read each bank and adjust the fuelling accordingly, the rear ones just decides if the cat is working correctly or not.
Hope all that helps, I'm massively hungover but I think it's all accurate lol
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
![[Image: 1y9t7o.png]](http://i50.tinypic.com/1y9t7o.png)
Make sure that you have also fitted cooler spark plugs!!! It is a must!
LEXUS IS200 - The most fun car to go sideways
Hi, I know quite a few Germans and Austrians from Euro LOC who have fitted a 140mm pulley and use the TTE ECU and their cars runs great with no problems. The power output is around 220bhp. As Stav informed you thier cars run a bit lean at high revs near the rev limiter, but it is in the safe limit. They have also fitted high impedence Denso fuel injectors 215cc from a Toyota Tacoma. No need to fit an upgrade fuel pump. Your oem is fine, just make sure it is in good condition. Here is a dyno graph of a German guy who recently fitted a 140mm pulley.
Make sure that you have also fitted cooler spark plugs!!! It is a must!
LEXUS IS200 - The most fun car to go sideways
Sparkystav And the lamba sensors your right, the front 2 read each bank and adjust the fuelling accordingly, the rear ones just decides if the cat is working correctly or not.
Does the ECU have to have all 3 lambdas? At the moment, my Camcon is (what I have now decided is wrong, and all info in the net about fitting the Camcon to an IS200 is probably wrong) connected to the rear Lambda, therefore its doing sweet FA. Is there a way to remove/bypass the rear lambda so that the ECU is always given a 'healthy' signal?
Can the 2 front lambda's be wired in a way, so that 1 Lambda send the signal back to the 2 'inputs' of the ECU?
If all of the above is possible, I can replace the rear Lambda with a bypass system, wire the front 2 to 1 Lambda (probably where the old rear one used to be - after the 2-1 section) and then I could possibly use the Camcon correctly to adjust the AFR and VVTI signals as it was intended??
I know it'll be easier with an aftermarket piggyback like a Emanage Blue, or Ultimate, but my budget can't stretch that far at the moment. :lol:
Thanks for your help Stav and Dimis, but sorry, I have more questions.
Sparkystav And the lamba sensors your right, the front 2 read each bank and adjust the fuelling accordingly, the rear ones just decides if the cat is working correctly or not.
Does the ECU have to have all 3 lambdas? At the moment, my Camcon is (what I have now decided is wrong, and all info in the net about fitting the Camcon to an IS200 is probably wrong) connected to the rear Lambda, therefore its doing sweet FA. Is there a way to remove/bypass the rear lambda so that the ECU is always given a 'healthy' signal?
Can the 2 front lambda's be wired in a way, so that 1 Lambda send the signal back to the 2 'inputs' of the ECU?
If all of the above is possible, I can replace the rear Lambda with a bypass system, wire the front 2 to 1 Lambda (probably where the old rear one used to be - after the 2-1 section) and then I could possibly use the Camcon correctly to adjust the AFR and VVTI signals as it was intended??
I know it'll be easier with an aftermarket piggyback like a Emanage Blue, or Ultimate, but my budget can't stretch that far at the moment. :lol:
You can get a box that replaces the rear O2 sensor, it's an O2 simulator, I make them and sell them if you want one.
Personally I'd stick the camcon on eBay and use the money towards an ecu.
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sparkystav
01-05-2019, 01:06 PM #9Firstly I wouldn't suggest joining the 2 main lambas together as they control separate banks, but it could be done
You can get a box that replaces the rear O2 sensor, it's an O2 simulator, I make them and sell them if you want one.
Personally I'd stick the camcon on eBay and use the money towards an ecu.
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sparkystav Firstly I wouldn't suggest joining the 2 main lambas together as they control separate banks, but it could be done
You can get a box that replaces the rear O2 sensor, it's an O2 simulator, I make them and sell them if you want one.
Personally I'd stick the camcon on eBay and use the money towards an ecu.
What would be the worse case scenario of wiring the 2 main lambdas together?
Wouldn't it just 'average' out the effect it has on the engine? so rather than adjust the air-fuel ratio over 3 cylinders, it'll do it over 6 instead?
Sparkystav Firstly I wouldn't suggest joining the 2 main lambas together as they control separate banks, but it could be done
You can get a box that replaces the rear O2 sensor, it's an O2 simulator, I make them and sell them if you want one.
Personally I'd stick the camcon on eBay and use the money towards an ecu.
What would be the worse case scenario of wiring the 2 main lambdas together?
Wouldn't it just 'average' out the effect it has on the engine? so rather than adjust the air-fuel ratio over 3 cylinders, it'll do it over 6 instead?
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