The proverbial hammer hath hitteth the nail head - exactly :D

The difference is that the Stock turbo is maxed out! I'm sure there's still a decent amount of power to be had from the BR475?

although I realize this, it will only be able to push more on racegas perhaps. Im in no way trying to insult BR, **** I can stand by people that are true to their customers in producing cost effective products. I am questioning the output of this turbo, if in fact it is a worthwhile turbo replacement or is it just a mild upgrade. I for one would never spend that much on 25-35 whp (for 94 octane that is).

apples to apples
 

Food for thought:

Is it fair to use race gas numbers to compare a pump gas figure?

Assuming Dave hits his 475 whp goal and using your 25hp loss figure, this equates to 450whp. This is 80 hp more than your highest quoted stock turbo number.

what are the specs on this so called "BR475" what wheels does it have, can we see a compressor map

i tuned 4-BNGR''s friends car. sorry but we cannot simply give out the cal file. if you want to talk to me about it just hit me up on IM, i'm always happy to help out. if this was my personal car id be more than happy to give you the cal, but i cannot do this with customer stuff... hope you can understand that. {thumbup}

There are a whole lot of people who would be very happy with a pump gas 400+whp kit with the durability and spool of OE... esp. at the bargan price Buschur is offering it for... which leads me back to the watercooled question to David. I'll leave the race gas to you strip warriors...

zeus... rember what buschur has posted is on a 2wheel dyno, NOT a 4 wheel dyno. thats not a real 400hp

But the increase is real - right?

You people are wearing this 2wd dyno/4wd dyno thing out. All you have to do is look at track times. David was running as fast as the cars with turbo upgrades when he still had a stock turbo. What do you think he will do now?
If you guys wanted a dyno queen, you should have bought a supra. Just remember the highest dyno numbers dont always win the races.

Look at what BR's car did on stg3 and 4 tune, less power and solid 11's. If that car put down enough power on 100+ gas and now it puts out at least 20-30 hp more on 94 you guys should be jumping up and down. The car should run at least 2-3 tenths faster now on pump gas, that puts it in the 11.40's. I don't think some of you guys understand what it really takes to get a 3300+ lbs car down the track in the mid/lowish 40's. I have been drag racing for over 20 years and rememeber what it was like to tune (re-jet,time,set valve lash, tweek a 4 link) on a small block mopar to get street car in 10's and then into the mid 9's. A lot of tuners "toss" e.ts's around but BR seems like the rare one who backs his **** up with a real pass...I say hats off to him and when my car gets here I know who I'm going to spend my money with. Toss the dyno numbers in the trash and go by what the numbers at the track say, and if you want to claim the I can't drive thing then just look at MPH. You can't fake those!

Agreed.

Dyno this dyno that, is all I hear on this forum . He just put the turbo on the car and did a few test runs without tuning it and put some numbers up for you guys, and now ppl are *****ing and fighting over some dumb****. David is one of the foremost inovators of the 4G63 , he knows what he is doing. Look at the cold hard facts, Buschar Stage 4 on a stock turbo put down 11.65 at 119 .What more proof do you need???????? David will be in the 10's by this summer I am sure of it. Ohya and it is affordable.
Ohya so with 400whp at the DYNO = atleast 440 at the crank.......

Yup.

Hey guys. Just had some time to see what David posted regarding our new turbo kit for the Evo. I normally don't get much time to spend on the forums so I don't get to see a lot of what gets tossed around on here. It's probably a good thing. I might get discouraged altogether.

I have a couple of things I'm going to point out about this turbo kit so that you may understand what we were shooting for when we layed it out.

First, we wanted to make it cost effective. Fair price and excellent (if not the best possible) performance.

Second, reliability. We wanted to make a turbo kit that was going to be reliable for you. Not some high dollar ball bearing turbo that will most likely fail on a street driven car after a few thousand miles. If you had to rebuild it, would you want to spend over $1000 on the rebuild? I don't think so. I don't want that phone call. No tubular headers (IF YOU BUILD TUBULAR HEADERS DO NOT BE OFFENDED BY THE FOLLOWING COMMENT, I'M SURE YOU BUILD EXCELLENT PRODUCTS) that have a high probability of cracking over time. So we cast a manifold. Huge investment. Huge. We could have just taken the quickest approach to get something to market, but we didn't. It's not about taking your money with us. We want your business out of respect for what we can achieve for you, we don't want to dazzle you with bling, smoke and mirrors and try to get your money before the next "online performance warehouse" gets it. If that were the case, we would have just welded together some headers (we're perfectly capable of manufacturing them) and brought a turbo kit to market months ago. I don't believe that is what you guys are looking for, and we most certainly do not want to do business that way.

Moving on, having gone off... we wanted to provide our first turbo upgrade in a configuration that would make more power than stock yet spool almost as quickly. Believe me... we've run turbo combinations at every level of the game. You have to make some engineering compromises. This first turbo was configured to spool like mad and let us still make good power up top. The perfect drag race turbo? Not for an all out drag car. For a balanced car that you can drive on the street, autocross, road race *and* drag race? You bet. This car will be an absolute animal on the street. I can't wait to take it off the dyno and take it around the block.

This combination with the right driver on racegas, feels to me like it *could* pull off a high 10 second pass. We'll know more tomorrow when I actually tune the car on racegas and turn the boost up. Which brings me to another point.

I don't care about dyno "numbers". I really don't. I do, however, care about the increase or decrease in comparisons from our baselines. I also care about the quality of the curve, as does David. We showed you guys a true comparison of real pump gas numbers between this new kit and the stock turbo. Same conditions, same dyno, same tank of gas! In fact, I pulled the stock turbo off the car and installed our new turbo kit without even unstrapping it from the rollers after our Buschur Flash tuning session. Even the placement on the rollers (if it would even make a difference) was identical. I don't know about you... but even if "our dyno" shows a higher power number than "their dyno", it's still difficult to argue the difference in the quality of the torque curve, and the overall 54.7whp *increase* from the stock turbo. Take notice at how quickly the power comes on. Not far off from that bad-ass (in respect to spool up) stock turbo. Not bad for a conservative tune that you could drive on the street everyday with 93-94 octane at 20psi. Even if you ignore the increase in power, or the spool up, look at how much more torque is available under the curve... this thing will do parking lot donuts all night long. I guess the point I'm trying to make is this: It's a balanced combination that will wrap a grin around the back of your head... and if 400whp (sorry if that's too high in regard to "our dyno") is so easily achievable with this kind of spool up on pump gas, then I challenge you to give it a try.

Bring it.

I'll be tuning the car on racegas tomorrow morning with a boost target of 25-28 psi. Won't know what the turbo will deliver until we roll it up, but I can assure you that I'll give it hell. If the rods stay in the engine I believe we'll have a nice "racegas" number for comparison against "our dyno's" baselines. We'll definately keep you posted.

Take care.

I agree. I'm sure I will see 360 whp out of stock turbo on my dyno on some of the higher modified EVO's which is probably close to what this turbo will deliver but I think they designed this turbo kit for those who want a very mild increase in performance and a nice broad torqueband. This is certainly not a turbo for those looking for big HP numbers as is evidenced by the stock spool up characteristics.