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I’ve had a blast reading through your journey with your car (many times over lol), it’s the best documented power up for an evo imho.
I look at it as the absolute dream build for a daily that can be taken down the 1/4 mile one weekend & the track (road course) the next. You have some great miles on her, with fantastic reliability after all the track work.
Congrats mate you really deserve it.
Thank you! I wanted to be as helpful as possible incase someone wanted to follow the recipe for a fun street car.
So, when I bought the htz red to upgrade from the hta red years back I opted for the ss housing. I knew it would change the near instant spool up and make a bit more out the top with less back pressure. But, I like testing and data so.. Most fuel stations have winter blend ethanol that comes in at 72-74 content. I knew we were going to run the car hard so I splashed in five gallons of https://www.oneethanol.com/products R fuel Content went from 74 to 87. Injector duty was near max. Made four runs over 600 before pinning the gate . 675/561 at 43 down to 33psi This was a pin the gate glory run and think 630-640whp is more inline with what this turbo will make at 35-36. 655/519 at 36psi tapering to 32.5 @8145
The transient response isn’t near as good as before and it’s 600rpm late to the party to 20psi now in the low gears. I will be going back to the mhi housing and most likely the 4.11 transmission for what I do with the car. Mitsubishi knew what they were doing with the twin scroll housing. With the MHI housing the car has near instant spool/grunt and will happily go down the road effortlessly . Or powerslide the tires off !
I am not saying the SS housing is a bad thing. It makes power easily and has less backpressure. Its just not ideal for what I built the car for. I think FP has done a great job with product development. With any build its important to select the parts for your goals. I like to auto x, and have near instant response for the street/road course.
I've also spent more time on the MoTec and its a fantastic Ecu. Powerful, logging is flawless,Cuts are soft, car starts and runs well on the stock trigger wheels.
649 run was two years ago and conditions were good. RED HTA MHI Boost was 32psi on the hit,37 peak, down to 32psi on pump 81% ethanol. 4.11 trans .80 lambda
591 was this summer in 88* weather and a different wastegate actuator . It didn't hold boost or make power well that day. HTZ RED MHI 35 down to 29 on pump 80% ethanol 4.31 trans .80 lambda
652 was on the HTZ SS combo at 35psi down to 32.5 on One Ethanol R fuel. Content was 87%. This was the cleanest the car has ever run. Dyno graph at 5 and 0 barely change . 4.31 trans .80 lambda
675 run
3000 5.37
3500 12.36
4000 24.88
4500 37.62
5000 42.1
5500 43.08
6000 42.16
6500 39.22
7000 36.32
7500 34.66
8173 33.24
Some of the power is the housing difference and the fuel. Timing was close between all three sessions. I have a 10:1 engine and splashing some good fuel in for max effort runs is cheap insurance IMO.
This is an awesome thread! I've pretty much got my 2.3 Evo ix setup the same way, but with a Ported MHI xona black ball bearing turbo instead.
I'm on the same page as the OP, it's most rewarding to have a nice "well rounded" street car.
This is an awesome thread! I've pretty much got my 2.3 Evo ix setup the same way, but with a Ported MHI xona black ball bearing turbo instead.
I'm on the same page as the OP, it's most rewarding to have a nice "well rounded" street car.
and how is the power of the mhi black on pump gas?
Did you ever consider an aftermarket twin scroll set up like an EFR equivalent to the FP Red (EFR 7163/7670) for reduced back pressure or always wanted to stay stock frame set up?
Did you ever consider an aftermarket twin scroll set up like an EFR equivalent to the FP Red (EFR 7163/7670) for reduced back pressure or always wanted to stay stock frame set up?
Years ago I considered a Gen 1 GTX3582R and PTE 5858 . Those won't have the snap response of the red for powersliding but will perform better out the top with less backpressure. I decided to stay stock frame to keep it stock looking, and didn't want to risk changing the sound of the car. I also didn't want to deal with possible cracks on the manifold.
The EFR line is neat and going off the recent 2.4/7670 car in texas (eflove) it powerslides nicely.
The 7163 is too small. The 7670 being limited by shaft speed makes 500whp or so at 7500 at least on a 2.4. That particular car comes up is 500-600rpm ahead of the red but the 100mm crank helps . Still a great powerband and the owner didn't mention any compressor surge at a low rpm.
nice build @Abacus ! do you plan to upgrade to Red UHF? The backpressure reducing design looks promising
The UHF is currently only available with the stainless steel single scroll housing, so my guess is that Abacus will not upgrade if only that turbine housing is available. Perhaps a key question though is whether the MHI TS turbine housing will bolt up to the UHF. If the UHF is just compressor side changes with the same CHRA, then I suppose a UHF sold without a turbine housing could accept an MHI TS turbine housing.
UHF turbine is a different size (smaller) than the standard green/red/black turbine. The housing would need to be new, and machined to the correct smaller size for it to work properly. But the fact FP doesn't offer the UHF green with the MHI hotside makes me think there is other incompatibility, not just the different size.
If I'm not mistaken the specific UHF turbine, is not only smaller, it is also of less height, that means that it probably sits at a different place inside the TS mhi housing, in relation to the usual 11 blade turbine wheel, where it creates a need for further machining which the mhi housing might not be able to take. The only way to verify this is to actually have both parts in hand. It is most definitely the more efficient wheel to use.
Very good results on the fp red btw, this is the first time I saw this thread.
Marios
Last edited by Evo8cy; Jul 1, 2020 at 11:30 AM.
Reason: typo
The UHF is currently only available with the stainless steel single scroll housing, so my guess is that Abacus will not upgrade if only that turbine housing is available. Perhaps a key question though is whether the MHI TS turbine housing will bolt up to the UHF. If the UHF is just compressor side changes with the same CHRA, then I suppose a UHF sold without a turbine housing could accept an MHI TS turbine housing.
If I'm not mistaken the specific UHF turbine, is not only smaller, it is also of less height, that means that it probably sits at a different place inside the TS mhi housing, in relation to the usual 11 blade turbine wheel, where it creates a need for further machining which the mhi housing might not be able to take. The only way to verify this is to actually have both parts in hand. It is most definitely the more efficient wheel to use.
Very good results on the fp red btw, this is the first time I saw this thread.
Marios
agreed. we need somebody to compare the turbine wheel offset / height. very interesting if this turbine wheel can fit into MHI twin scroll housing
I chatted with FP about this last year when they announced the UHF and at the time they had zero interest in making it work with the MHI housing.
I've been toying with the idea of designing an FP style housing but twinscroll. Essentially it'd be like their housing, 3" vband outlet, factory flange inlet, external wastegate, but would be a larger A/R twinscroll volute.
I may go talk to Robert at PRI again about it and see if FP would have interest in manufacturing it, if not I know a turbo manufacturer local to me in MI that can cast and machine stainless housings.
Dec 27, 2019, 02:00 PM
