Taking a chance - Cavalli BB Turbo
Wow this sort of blew up. I took more logs late last night, I will post them up late tonight when I get home from work, car spools to 24psi by 3850rpm. There really seems like something is up with the fuel system on my car. We're hitting 92% IDC on pump gas, and it's not making much over 400hp. Chet asked me to order a Walbro 450, so that's on the way from maperformance. Really hoping we can get to 450whp on E85 if we overclock the injectors. Not sure why I'm see such high duty cycle on ID1000's and pump gas currently.
*EDIT*
Nvm saw that you have a DW65c.
Based on the Injector Dynamics fuel flow calculator on pump gas at your boost pressure you should be around 70% IDC at 7500rpm on pump gas, which is equal to E10. On E85 at 26psi with ID1000's you will be at 97% IDC at 7500 rpm. 27psi gets you to 99% IDC on E85.
I would honestly consider bigger injectors. I am running ID1300's and a Asnu FP330E fuel pump and I have 0 issues. On 91 (E10) my IDC would be 54% at 7500rpm at 26psi. On E54 (the fuel currently in my tank) I would be at 68% IDC at 7500rpm on 29psi.
I have not tested it yet, but based on the calculator with E85 at 32psi I would be at 83% IDC at 7500rpm. This is assuming the Asnu FP330E fuel pump will keep up. That being said I have absolutely 0 issues with this pump on E54.
I would honestly consider bigger injectors. I am running ID1300's and a Asnu FP330E fuel pump and I have 0 issues. On 91 (E10) my IDC would be 54% at 7500rpm at 26psi. On E54 (the fuel currently in my tank) I would be at 68% IDC at 7500rpm on 29psi.
I have not tested it yet, but based on the calculator with E85 at 32psi I would be at 83% IDC at 7500rpm. This is assuming the Asnu FP330E fuel pump will keep up. That being said I have absolutely 0 issues with this pump on E54.
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Joined: Mar 2017
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From: Bloomingdale, IL
Based on the Injector Dynamics fuel flow calculator on pump gas at your boost pressure you should be around 70% IDC at 7500rpm on pump gas, which is equal to E10. On E85 at 26psi with ID1000's you will be at 97% IDC at 7500 rpm. 27psi gets you to 99% IDC on E85.
I would honestly consider bigger injectors. I am running ID1300's and a Asnu FP330E fuel pump and I have 0 issues. On 91 (E10) my IDC would be 54% at 7500rpm at 26psi. On E54 (the fuel currently in my tank) I would be at 68% IDC at 7500rpm on 29psi.
I have not tested it yet, but based on the calculator with E85 at 32psi I would be at 83% IDC at 7500rpm. This is assuming the Asnu FP330E fuel pump will keep up. That being said I have absolutely 0 issues with this pump on E54.
I would honestly consider bigger injectors. I am running ID1300's and a Asnu FP330E fuel pump and I have 0 issues. On 91 (E10) my IDC would be 54% at 7500rpm at 26psi. On E54 (the fuel currently in my tank) I would be at 68% IDC at 7500rpm on 29psi.
I have not tested it yet, but based on the calculator with E85 at 32psi I would be at 83% IDC at 7500rpm. This is assuming the Asnu FP330E fuel pump will keep up. That being said I have absolutely 0 issues with this pump on E54.
These cars are so fickle sometimes. Makes me miss how simple it was to make power on my coyote 5.0. Hah
I'm sadly thinking that I'll probably have to fork over the money for injectors. But we're starting with this first. The DW65 has been in the car for 3 years now, it's probably time to pull it out for something else. I still just can't comprehend why it's asking for so much fuel. I will say that the newest map Chet sent me feels slower than before. I took the log on a different road so I can't say for certain, but when overlaying the previous vydno posted, the midrange is down ~20hp from 4-6k rpm.
These cars are so fickle sometimes. Makes me miss how simple it was to make power on my coyote 5.0. Hah
These cars are so fickle sometimes. Makes me miss how simple it was to make power on my coyote 5.0. Hah
Evo's are a great platform to make power, just need the rights parts/combination. As Aaron from ER says, do one thing wrong in the combination and it will only hurt.
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Joined: Mar 2012
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From: New York
I mentioned earlier about hitting 450whp on pump on ID1000's. I thought that would be a risky proposition. Only a fuel pressure gauge will let you know if the pump is weak on the top end.
As far as this turbo vs. 18k on the spool front; I don't think they would be the same. The cavalli turbo is a comp turbo and the turbine is basically a constant diameter. That is the exducer and inducer are nearly (or exactly?) the same. Therefore there isn't a velocity effect as the exhaust gas flows through the turbine. The end result is slower spool but in theory MORE efficient and better top end for an equivalent sized but traditional turbine. I wonder if to really see this turbo shine it would need to be at really high boost. Question is will this turbine design have a good impact before the compressor runs out of steam.... If not then it may be what people are saying: a bad designed turbo for a 4b11 2.0 liter engine.
~Jaraxle
As far as this turbo vs. 18k on the spool front; I don't think they would be the same. The cavalli turbo is a comp turbo and the turbine is basically a constant diameter. That is the exducer and inducer are nearly (or exactly?) the same. Therefore there isn't a velocity effect as the exhaust gas flows through the turbine. The end result is slower spool but in theory MORE efficient and better top end for an equivalent sized but traditional turbine. I wonder if to really see this turbo shine it would need to be at really high boost. Question is will this turbine design have a good impact before the compressor runs out of steam.... If not then it may be what people are saying: a bad designed turbo for a 4b11 2.0 liter engine.
~Jaraxle
Hey guys, figured I'd document my build here. 08' Evo X GSR with factory long block. Car has been babied by one of my good friends who bought it brand new.
Long story short, the stock turbo is toast. Instead of finding a stocker, I came across a killer deal through RallySport Direct on their last Cavalli Stage 1 BB turbo for far less than I would've paid for an MHI 18k. It's described as "540HP Rating
53mm inducer/ 56mm exducer" but I know some have seen some mixed results with it, claims to flow somewhere around 56 lbs/min. I thought I'd document my findings in this thread about what kind of power it makes and how reliable it is. Chet Rickerman is doing the tuning and we will be using E85. Here's to hoping there will be enough fuel to hit 450whp!
Long story short, the stock turbo is toast. Instead of finding a stocker, I came across a killer deal through RallySport Direct on their last Cavalli Stage 1 BB turbo for far less than I would've paid for an MHI 18k. It's described as "540HP Rating
53mm inducer/ 56mm exducer" but I know some have seen some mixed results with it, claims to flow somewhere around 56 lbs/min. I thought I'd document my findings in this thread about what kind of power it makes and how reliable it is. Chet Rickerman is doing the tuning and we will be using E85. Here's to hoping there will be enough fuel to hit 450whp!
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