Hey fellas, looking for results with the UHF Green or UHF Red w/ MHi housing on a 2.0 or 2.2. I haven't been able to find much info or threads with the UHF stuff anywhere, especially with using the MHi housings. I bought my Evo 8 back at the end of 2023, its a wicked white 2005 SSL, stock bottom end 2.0, gsc s1 with springs and retainers, FP Black w/ SS housing on a no name tubular manifold, stock ecu SD tephra with dual maps for pump and eth, ID2000's. The car came with that setup. After sifting through threads here and there for the past handful of months, I'm still kinda stuck on which turbo to go with. The Black on a 2.0 with the SS housing seems too laggy for the street in my opinion. Just looking to build a street car that's fun anywhere and anytime. I'm not too concerned with peak hp, I made that mistake in the past and learned from it. I'd rather go for more of a torque monster, but can carry out to 8k. I'm also planning on switching to the FP manifold to get that classic sound back along with the MHi/internal gate. I understand I'm limited with the stock rods but within a year or two I'll be ready to build the motor, so I'm also looking ahead when I make this decision. Really want to do a 2.2 stroker w/ 153mm rod but not opposed to building a 2.0 setup. I have access to E85 so the car is mainly ran on E other than before and after winter.

Abacus, I love your 2.2 Red setup. Very well rounded build. I figured with it being 2025 and the UHF Green/UHF Red being around for a little while now it was worth seeing if the UHF is a better choice nowadays with the MHi or if the crown still goes to the standard. Currently in my head I'm wondering if a UHF Green would carry out like a standard red but spool a tad quicker? Seems like it would be a better choice on a 2.0 maybe. I wouldn't mind being the test dummy for either or both UHF versions if enough people were interested and logging them.

With all of that said, does anyone have a UHF Green/UHF Red on a 2.0 or 2.2? How do you like it compared to the standard Green/Red? Still get the low end hit with the UHF? Thank you guys for your time there's so much valuable information on this forum and I've really enjoyed reading through the threads! Amazing an old forum is still fairly kicking these days and I hope it continues to do so!

 

Unfortunately I can't give you exactly what you are asking for as my green was an HTA and red was an HTZ but I can say that I found the green to be mated perfect with the stock engine. Spooled awesome and made power out top.

I ended up building a high comp 2.0 and switching to the red and it is just like my green was. The plots are super similar in terms of spool but makes more peak.

If you are planning a build anyway, you might as well try and duplicate Abacus. His setup is awesome and certainly would be a blast on the street. If I could go back, I would have built a 2.2 as well. I did the 2.0 to save a little money and while its great, I think the little extra displacement wouldn't hurt.

Keep us updated on the build and the numbers it does man! Never hurts to have more info available for future builds!

 

Thanks for your input man, still solid info!

The reason for considering keeping it a 2.0 is exactly what you said, to save some money. But also don't wanna regret not just going 2.2 while i was in there haha. If i replicated Abacus' setup I'm not sure I'd wanna do the mivec.. which is also a consideration to go with a green. Unless mivec is really that awesome and worth doing? I think one less thing to go wrong but I'm new to the platform and still have tons of info to read.

I will definitely start a log with my car once I decide on a turbo and get time to swap the parts. Would love to try the UHF stuff just to put more info out there!

 

I wouldn't add MIVEC to an 8. Its nice but not needed and parts without are easier to find.

The UHF stuff should be great and honestly, for a 99% street car, 2.0 vs 2.2 will be pretty minimal difference in most cases. Honestly, I would probably start with tearing the engine down and going from there. If your crank is fine, build the 2.0; if its broke, build the 2.2.

And just a little extra info, if you are after spool at the expense of a little top end, you could move back to a stock exhaust manifold rather than the cast FP one. I can't find it right now but I have seen a back to back dyno and the stock smaller runners out spooled the FP manifold. That's the reason I haven't switched away from the stock one. I also have the stock intake manifold and everything too to try and pull the spool in as much as possible.

 

Here is a comparison of my stock bottom end with Cosworth M2s on the green vs my current built 2.0 with GSC S2s and the red. Ignore the AFR, I was having some wideband issues during the FP Red pull but it should give you an idea of green vs red.

 

Solid advice on waiting until the block gets torn down, that's smart thank you! The car has 98k miles on the odometer, I have a feeling the crank will be fine but who knows.. like I said I have no issues with keeping a 2.0. What compression pistons did you go with? I also have the stock intake manifold as well, and wouldn't mind sacrificing a little top end for a little better spool. It's been years since I've ran a smaller turbo so I'm very excited for fast response. Interesting on the stock exhaust manifold but that makes sense. Most threads I see are running the FP manifold. Is your stock exhaust manifold ported? When does the party start in 2nd gear for you?

Perhaps I'll end up replicating your setup Schuhie! Lol

 

I think that makes the most sense. I'm sure the crank will be fine lol.

I went with a 10.5:1 weiseco but I would probably build a little lower compression if I did it again. The gains are mostly off boost gains and lower compression will give you a bigger tuning window on E and allow it to make some power on 91/93. My car on 91 is basically just a tune to run and drive, no timing, wastegate boost, etc. It makes less than 300whp on 91.

Mine isn't ported or anything, its straight as it came from the factory.
As for second, I am not 100% sure. I haven't taken a log in 2nd but it parties.

If you have any more questions feel free to ask them here or message me. I'm more than willing to help someone out. I am super happy with my setup for the street. It isn't optimized for peak numbers by any means but really does what I wanted.

 

Maybe a 9-9.5:1 then on that note?

Stock manifold seems like it will work just fine for what i want, which is basically exactly what you did. Optimized everything for spool up. Your power band carries out nice too. Love it.

I always start my rippers from 2nd gear on the street which is why i asked. No biggie though!

Yessir will do, appreciate the help so far man!

 

Yea, I think either would be fine. I would just go with their off the shelf pistons. Looks like they fall between 8.9 and 9.3 ish.

Yea, I think that if I went FP, I could maybe carry a flatter power curve up top but I never have had a reason to try it. I'm happy with what it does lol.

I do too, just don't have a log for it to reference and its been 6 months of it being parked for winter so I don't have a recent frame of reference.

Anytime man!

 

Yep schuchie provides the best advice for what your looking for lol.

because of his suggestions on a similar post I started, I am currently working on a build with a shop parts already purched.

evo9
built 2.0 block with stock crank (9.0 compression)
head is completely stock but deciding to buy gsc s2 cams once we get back motor from machine shop.

hta71 turbo
fp manifold (ported, I purchased it used and was already ported).

Hoping this setup will produce what I am looking for. Stock like spool with a larger powerband.

 

Hey I'll take all of the advice I can from people that have been in the game long enough to know what works and what doesn't!

I bet you're gonna have an absolute blast all over town with that setup. I did do a little digging on the HTA71 recently just out of curiousity and it seems to do exactly what you're looking for. Can't remember how much of a bump the compressor gets over stock wheel but from what I've gathered it moves a fair amount more air. E85? Are the GSC S2's super popular with these cars? I was planning to snag some Kelford 272's, wanted to stray away from the billet stuff as I've rounded a lobe with the S2's in my 2J a few years back. Although that could've been related to a casting area in the head. I think it was Jay that made a video when he was still at Real Street about that but maybe it was someone else. Either way, I plan on sticking to cast cams from here on out.

Do you plan to autox the car with that setup or just for the stock spool fun factor?

 

I have a 2.0 stock block with a built head GSC s2 & the SS housing FP green. 440whp
Had a red prior make 465whp and this is a little bit less lag. But still not as fast spooling as a FP 20g would be.

 

fun factor. I might auto x once a year. I live out in the boon docks away from the city so I have a lot of back roads to enjoy safely. I don’t care to chase times on a circuit, just love the evo platform. Plus that’s a whole different budget to get a car track fit for a season.

I actually am thinking of staying stock evo 9 cams. That’s why I didn’t build the head as yet. The head is still completely stock (167k miles) but freshly machined.

ive never had an issue with the head and stock cams. Now you’re making me think to keep it that way lol.

 

How's the SS green spool for you? I'm gonna go with MHI for sure. Did the Red have an MHI or SS? If the car does what you want what more can ya ask for!

 

Hey that's awesome, if I lived in a location like that I'd do an HTA71 on corn no doubt. Or a water/meth kit if no access to E85. Keep me posted on that sir!

I'm most certainly not trying to push anyone away from upgrading cams or even running the billets from GSC specifically, if they don't have the lobe rounding issue on 4G's then I'd say go for it. Just from my experience with them rounding a lobe when I had the 2J it's engraved in my head to go with cast cams from now on. Couldn't buy just one cam either had to buy the set to replace one. Just don't wanna risk it for peace of mind. My car has the billet S1's now, it's what it came with. No idea how long they've been in the motor but no issues so far. I'll be switching to Kelford 272's though when I'm able to as they are cast.