hey evo23.. what kind of dyno did you get your number on?

 

Stock EVOs don't do 230whp.. They do 240whp (on a Dynojet). And again, the difference may be the hotside, but it's not the physical size that makes the power.. it's the sustained boost - do your research on turbos.

-M

 

These types of post make me want to see what numbers I'll put down on a dynojet and other dynos to see what kind of number increases I'll get out of what I did on my own instead of going with a stage 1,2,3 etc.

 

The 10.5 hotside is not increased in diameter, as you suggest, but in volume...the 10.5 cm is a reference to the volume of the hotside snail, the reason more boost is achieved without any other changes being made is that exhaust gas flow is increased and compressor speed in turn is increased. On race gas we quite often see a 20whp gain on a Vishnu stage 1+ after installing the hotside, a nice little mod for not much coin IMO

 

Andrew,

Did I say increase in diameter? I'm sorry.

But of course, the exhaust is flowing more and thereby increasing boost. I wouldn't spend my $300+labor on getting a hotsided turbo. If the turbo is going to be removed, then one that is going to do more than a 20whp gain will go on.

And that 20whp is significant due to the other modifications on the car. Putting a 10.5 hotside on a stock car won't yield 20whp.

-M

 

The MR's are have more aggressive timing over the 03's...when tuning the Xede the timing offsets need to be a lot greater on the MR's and 05's than the 03's
this is in part, along with the hotside, the reason I am seeing the same power from MR's as STi's..... is this an accident the two are so evenly matched?

 

Thanks for the more reasonable and more realistic clarification.

-M

 

I got my custon tune on Dynojet. Your numbers are very good for a DynoDynamics. You probably make like 380whp on a Dynojet. Congrats on another great tune by Shiv.

By the way Vishnu_Evo8, hows the cusco diff working out? I wish I had a front diff.

 

Thats why I am no expert in turbos Good thing an expert stepped in cleared the air.

 

Of course there is other ways to find 20whp gains from a 300 wheel horse evo. I disagree though that other ways would be simpler than the hotside...$250.00 and a few hours for 20whp?....back in the day we spent lots more than that for 20whp....not hating...but I think a few things you said were not entirely correct

 

Not an expert...I, like you, are learning more daily

 

Don't be lazy and put it in urself Don't be fool, you don't have to take off the turbo. Take the downpipe off, O2 housing, Exhaust Manifold than comes Turbo Housing and reverse order your done. I did it basically without a hitch and it only costs me $230 for the hotside and $40 for the install kit from Dyno4mance.

PS Andrew, those studs on the stock turbo housing would of have been a ***** to take off, thank again on the advice on getting the install kit.

 

Perhaps concerning the money.

I would think that one can probably get the same whp by getting hard intake pipes to/from the intercooler (and intake to the turbo) and then retune for the higher boost increase with those. That would be $250-$300 and one wouldn't have to worry about the labor charges (which are drastic for changing out that turbo).

-M

 

Ah. Macgyver-style eh?

-M

 

the 05 over the 03 and 04 has 2 things. Waste gate, and turbo nozzle that are different. so not just the hotside alone. its 2 things