i would like to build a road race car. i am already there just planning on doing a turbo swap soon seeing as i have the 03 evo with the smaller hot side turbo. so i was wondering do the buschur 20g or just buy a used evo 9 turbo. im pretty sure i would make more power with the 20g but just wondering which you guys think is better for road racing and what is going to hold up better in the car...

 

20g upgrade for $1k from FP. And you should try out the search function!

 

If you're going to be using race gas the 20G will yield better numbers than a 16G. On a strictly pump diet, I'm not convinced the 20G will do anything the 16G can't. FWIW, I have an OEM 16G IX on my '05 VIII.

 

Well, they both will perform very similarly in general, but you need to be WAYYYYYYYYYYYYY more specific for us to even begin to answer.

1) Which of the six 20Gs are you talking about?
2) What type of road racing? Full out wheel-to-wheel? Time Trials?
3) Which sanctioning body...NASA, SCCA, PCA, BMWCCA, etc?
4) Which class do you want to be in within those sanctioning body?

So much of this will determine what you should or should not get. For example, I'm competing in Time Trials with NASA this year in the TTS class, but the weight/hp ratio is 8.7:1. That means that at my minimum weight of 3350, I cannot go above 385whp while in race form. That means a stock IX turbo, which I'll be using, should be just about perfect, but a 20g may be too much.

 

Off-topic, but how do they determine your exact WHP at that type of event? Dyno just before you roll onto the track? Couldn't you just run the 20g and detune accordingly to get down to 385whp? (And how would they even know it's a 20g? Doesn't it look pretty much identical to the stocker?)

 

Before the season, you have to go to an authorized dyno and get a certified dyno sheet with date, time, and signature of the shop owner. You submit that along with your certified weight to the regional TT director who keeps the info on file. Then, at each event, you have to be ready to be taken straight to the nearest AWD dyno after the event is over, and whatever you put down with SAE correction is used. If your ratio is below 8.7:1, then you get bumped to TTU for that event.

 

how fair is that? i mean every dyno reads differently and if u went to a dyno known to read really low, then u would rock that race. there should be a dyno at the event.

 

Because it only matters what your highest possible numbers are on the highest reading dyno (Dynojet). Kinda hard to have AWD dynos at events.

 

well i figured it would be but it would be fair. also there is a guy, that has/had a AWD portable dyno that comes to the waterfests every year. i think he sold it though. so ur saying it has to be a dynojet? that would make more sense.

 

I've never seen a portable AWD Dynojet, but each NASA region certainly doesn't have access to such a thing anyway.

I'm not saying it has to be a Dynojet. I'm saying that you have to be PREPARED to be dyno'd on a Dynojet at any competition. You can't put down power for an 8.7:1 ratio on a Dyno Dynamics before the season without the fear of getting randomly tested at an event and ending up on a Dynojet where you make 40 more whp. It's not a perfect system, but it's still pretty good.

 

here u are my friend.

http://videos.streetfire.net/Player....7-8DBEB613D004

u cant see it here but it is AWD dyno

 

If I can't see it, then how does the vid help? They have portable 2WD Dynojets at events all the time, but I've never seen an AWD one. If it exists, it's probably very expensive.

 

I would go with the FP/Buschur 20G turbo, you may as well upgrade, and if you are limited to that specific WHP the 20G will do it on less boost, it has made over 400WHP on pump gas, DynoJet Numbers.

Also with a turbo car IDK how they can enforce the WHP numbers to a specific amount, you could simply turn it up right before the race. The only way I can think of is if that monitor the ECU readings.

 

well warr that is the dyno, and its AWD cabible. i was right under the tent watching an R32 get dynoed.

 

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