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The mkiv Supra Owners Club

Safe way of running 1.3 bar


SKI

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If I wanted to raise the boost on my hybrids (technics) to 1.3 bar and avoid detonation problems what would be the safest way to do this.

 

I've ordered a new fuel pump from Paul E for starters to make sure I'm on the right side of the fuelling from that angle, but obviously I will need to make other adjustments, any thoughts? Also, just had a new C.W side mount fitted.

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If I wanted to raise the boost on my hybrids (technics) to 1.3 bar and avoid detonation problems what would be the safest way to do this.

 

I've ordered a new fuel pump from Paul E for starters to make sure I'm on the right side of the fuelling from that angle, but obviously I will need to make other adjustments, any thoughts? Also, just had a new C.W side mount fitted.

 

Correct size injectors

Decent fuel pump

Adjustable fuel prssure regulator

ECU to adjust fueling/timing (eg. e-manage)

Optimax

Correct plugs

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UK spec injectors, IK24's, dont really like the FSE idea, so what's the way forward, ECU would be good but a bit expensive for 1 bar?

 

I wouldn't run over 1bar on the hybrids without electronics to map fueling/ignition as you will pushing the stock ECU beyond its capability of supplying enough fuel (remember the hybrids will be feeding more air than stock turbos, so you're going to need sufficiently more fuel to keep correct A/F mixture.)

 

E-manage is pretty responable for what it can do. Wasn't suggesting FSE I'd go for either HKS FPR or Aeromotive FPR.

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Nic, I've done some research, I dont think I will need all the features of the emanage, I already have my boost setup and FCD. Do you think an SAFC would suffice.

 

Also I think I read somewhere that the stck ECU was mapped up to 1.2 bar, but not sure?

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Mine runs 1.3 and she goes alright!! I fitted a fpr and it ran like sh*t. I decent I/C helps as well. I need some plugs though wheres the best place??

 

When you fitted the FPR did you get the fueling all set up with wideband O2 sensor and mapped on a dyno. A FPR needs properly setting up and adjusting, it's not something you fit and expect the car to run properly.

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Nic, I've done some research, I dont think I will need all the features of the emanage, I already have my boost setup and FCD. Do you think an SAFC would suffice.

 

Also I think I read somewhere that the stck ECU was mapped up to 1.2 bar, but not sure?

 

An SAFC would suffice, but I would compare the cost of SAFC with the cost of an e-manage, injector & ignition harness, as I think there is very little difference in it. If it was my money I'd spend a little more and fit an e-manage as it can map the fuelling so much more accurately, plus you can also map the timing. Talk to Ian C about mapping costs.

 

Stock MAP sensor is only good to a max of 1bar, so if you have hybrids then you are going to need more fuel and some way of controlling the A/F mixture

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Quote:

Originally Posted by Tom`s Supra

Mine runs 1.3 and she goes alright!! I fitted a fpr and it ran like sh*t. I decent I/C helps as well. I need some plugs though wheres the best place??

 

 

 

When you fitted the FPR did you get the fueling all set up with wideband O2 sensor and mapped on a dyno. A FPR needs properly setting up and adjusting, it's not something you fit and expect the car to run properly.

 

Yes I used a fuel pressure gauge which is what everyone does! Im not sure how an 02 sensor would help adjusting the pressure. We did everything by the book and it didnt like it.

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Quote:

 

 

Yes I used a fuel pressure gauge which is what everyone does! Im not sure how an 02 sensor would help adjusting the pressure. We did everything by the book and it didnt like it.

 

Well, you'd adjust the pressure until the fuelling was right-ish. If the fuel pressure is too high you'll run horribly rich and it's run badly...

 

-Ian

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