on one yeah. he tried all sorts of different fuels.

 

I need to read back to see which fuel was used for the 340 engine dyno. I am thinking E85 though.

 

No!
He had 360hp with E85 fuel and 340hp with 98Ron @14PSI

 

I'll take a bet that Mark is just underpromising and the kit will do better than this ......

 

Don´t think so.
He would have nothing from that.
For his business it would be better he overpromising..

 

With supporting upgrades, the "stock" Pettit kit makes about 260.
Very few people have gotten the smaller pulley to work correctly, but with similar supporting upgrades, it'll make about 300.

The Hymee kit will be about the same.

 

it's a bigger crank pulley not a smaller blower pulley, right?

yes, and those guys needed to upgrade injectors, etc. to get the higher numbers.

 

Mark last visited here on 4/14. I have sent emails without a reply. Does anyone know what is happing with him?

 

He's busy as hell.

^^

I communicate with him via E-mail. Received 3 e-mails in said period of time.

Takes a few days for him to respond. Finalizing everything and getting it ready, he's under a lot of stress

 

He send me an email 2hrs ago.
i think he is a very busy man at the moment

 

Probably. I don't know.
Either way, it changes the ratio.

And water/meth and a better bypass valve and a better MAF setup and proper EVAP plumbing and a better tensioner, etc...

 

Not busting on Mark (just getting a chuckle):

This is one of my favorite pictures and one that everybody that contemplates should look at for a long time.
Note that "parts to get it running" include rotors.

 

yep - need those

 

correct.

yes, water/meth. the better billet bypass valve is included now i think.

maf setup: better how?
evap plumbing: what makes it proper?
what's wrong with the tensioner? i know the nut didn't tighten very well but that was an easy fix.

 

Didn't mean to stir up a hornet's nest with people bustin' on Mark about power claims. We'll know the final numbers when we see full dyno curves. He did tell us that these latest numbers were on a dyno that connects to the wheels directly (no tires contacting rolling drums). Then there's all the correction factors that must be applied to get true 'apples to apples' performance numbers...besides the dyno's all spin backwards down under anyway, right

That all being said, this kit for me is all about driveability and reliability. I just want the power band of the RX pushed up about 50%, with the same shape and throttle response. Plus I want it to last for 100k miles. This isn't about smokin' the tires and ultimate whp...that's what my 600+hp Shelby GT500 is for.

 

lol

"Just".

 

"About 50%"...and I shoud be more specific and say I just want the torque curve shifted up by "about" 50%. Most stock cars put down about 140-150ft-lbs to the wheels...if I get to a peak of 210-220ft-lbs at the wheels, I'm happy. Peak power of 240-250 rwhp is about 40% above most stock dyno's I've seen.

I spend a lot more time driving near the torque peak than the power peak, so that's what's I'm focused on improving, hence the SC approach. Not trying to start a SC vs. turbo argument again. I'm personally biased towards the low end response you get from boost curves created by a SC.

 

Just curious , where in the dyno curve plotted below do you see the Pettit low end being superior to any of the turbos .?

 

 

As I said, I'm not trying to argue SC vs. Turbo. I've owned and installed both (BMW 335i, 911Turbo, WRX STi, Subaru Legacy Turbo, Shelby GT500 , Miata w/SC)....

I believe Mark's SC kit suits my requirements better than any of the turbo kits available. WOT Dyno curves don't tell you how a car responds to throttle inputs or 'feels' on the road/track. I personally perfer the SC approach.

Enough said....

 

it is nice to have choices-- i remember the days when we didnt.
OD

 

really?

choices.

what are they? pettit.

and someone let me know what else.. just saying,

and i really want to go into super dick mode, but prudent.

beers

 

I bet he meant FI in general. As for SC kits, there is the procharger version as well.

 

ok,

post up a fi system that you can buy now.. sc or turbo..

really..

procharger is missing in action.. in the usa. and the rest of the world as far as i can tell.

right now pettit is is.

btw, tuning is part of the kit.

really.

beers

 

Mazdatrix lists the procharger on their site.
it's not for sale?