Here's the deal guys, I started tearing my car apart and selling parts from my 6466 setup. The car made 838hp/570ish torque i believe on our new AWD dyno jet at Fathouse fabrications, (have to go print the dyno sheet to be exact) on the tune from last year. We just strapped the car down and made some pulls to see what it was making and there was definitely a little more in the car, but Adam Blevins and Fathouse the tuners at the shop were busy with customer cars and just didn't really have time to mess with the tune. There was also a couple minor mechanical issues that needed dealt with. Anyway, the reason I started pulling the car apart is because I'm going backwards on power. Having an 800hp street car was fun, but the maintenance was just more than what I wanted to deal with and I miss driving my car daily and back and forth to work, which I still did a few times a week, but with a quartermaster twin disk and big cams and ported head and what not it just wasn't enjoyable to drive in traffic and everyday commuting. I've already sold my cams and have someone interested in my turbo and manifold. I'm gonna put my stock head back on and Kelford 272's that I had on the car with the stock turbo. The bottom end still has life left on it, I put new rod bearings and mains in last season and didnt drive the car a crazy amount this year. So it will handle whatever we throw at it. I've got a standard mount manifold that I could bolt up a vband 5858 too and see what we could make on that turbo, I just can't find much info on the precision 5858, which leads me to believe the turbo isn't that great of a performer.... My goal here is to make 550-600hp and move the power band left a bunch so the thing doesn't make power to 10k rpm which will be easier on synchros and basically everything. I want more low end street power. I could also sell the manifold and buy an FP black kit. I've got some time to figure out what I want to do as it is winter here and just snowed like 4-5 inches last night, I'm getting ready to head to the performance racing industries show again today here in Indianapolis. Looking at so many new turbos and awesome racing products and talking racing yesterday has me all jacked up about getting the car running again. Just wanted a few opinions I guess on what you guys would do....

 

I've never had a car that made that much power so I can't even imagine. However, I do hear a lot of people stating that their cars were the most funnest during the 400-600whp phase. I think what you're doing is practical. I mean at those high numbers that you're putting down, if something breaks, it's probably something complex and expensive. All in all, once you go smaller a bit, if you're not content, you could always go back to putting bigger numbers down one day.

 

I could never go back to a stock frame set up. I say go 5858

 

I think I'm pretty well set on a 5858, does anyone have experience with them or seen many dyno/tuning threads on a built 2.0 liter setup. Id like to lay some graphs over each other with both turbo setups and compare spool and power curves.

 

After all the power I would be around a 6266 the least

 

i have a pte 5858. the turbo is good for 620hp and i see full boost right around 3600rpms. i was torn back and forth between the 58 and 6262 but in the end didn't plan on making 700 so i went with the 5858. i didn't spend the extra money for the dub but if it wasn't my dd id send it off and have it changed.

 

the 5858 is a great 500-600hp turbo full boost under 4000rpm, holds power well

 

I agree, I mean the car is fun with that Much power. I have raced people around here and had my fun with the car, now I want to enjoy driving it more often as a daily.

 

I might go for mid 6's one day but like you said I love driving mine and want to keep it as my daily.

 

I'd definitely go 5858. I know a couple guys with that turbo who are very happy. has good spool and puts down good power.

 

The ported head probably wasn't a factor, and not necessarily the cams. The 6466 setup and quartermaster twin disk however are not recipes for good streetability.

I made a deliberate decision to remain at my present power level for the same reasons, but there are no guarantees here. There are many factors directly affecting street tractability that are completely overlooked by those in search of big peak power figures. If linear, OE type drivability is what you're after, the first order of business I urge you to address is to go twinscroll and consider nothing else. You won't regret it. If I could go back to 2005 with my present experience, I'd have saved myself a lot of time and a considerable sum of money.

 

Fathouse has an AWD dyno?! And there was an 800+ Hp evo in the area?! Smh where have I been lol

 

I'm not really pulling the head in order to make it more street able, I wish I could leave it on tbh. We got a little carried away on porting and had to weld up a hole in a water jacket a couple times and I was pushing some coolant and there was just issues with the head so that's why I'm going back to stock head. I just figured I'd put my kelfords back in it because they are a good mild cam and would aid to spool and my goal of moving the power band left some. I'm not looking for another stock frame turbo car necessarily I just want to drop spool time some stop worrying about how much power it's making at 9k. When I was building it I wasn't thinking or worried about street ability I wanted to make big power and floor it a lot. I floored the crap out of it had a ton of fun and spent some money. Now I wanna drive it again more frequently. The quarter master is going to come out eventually but I'm gonna pull the tranny and freshen it up and when I do I'd just like to change clutches then, haven't decided on a clutch yet, but I drove an fp black evo x with a clutchmasters 850 twin and it drove amazing for a clutch supposedly able to hold decent amount of torque.

 

OP, I tuned a 5858 on a stock block as a DD on 93. He's been driving it that way since August this year on SD. He's very happy with his setup. https://www.evolutionm.net/forums/ev...k-5858-s2.html

 

I actually saw this thread in searching, but ya that's what I'm lookin for was just hoping to find some threads with a built bottom end and possibly ethanol where we didnt have to be conservative with the torque spike from the initial boost hit because that's what's going to be fun about the setup I'm trying to achieve IMO. I assume its just gonna be like a cast 35r wheel just better.