Turbo or Supercharge the AT?
08-21-2007, 02:00 AM
#26
I don't buy Kool-Aid
tajabaho1, Think of it like this the GReddy kit has been out for some time now vs the Pettit kit 
MazdaManiac, I'll let you know when I get closer to $10K
MazdaManiac, I'll let you know when I get closer to $10K
08-21-2007, 07:29 AM
#28
I'll let you know when I have it done on my car 
Common sense says that if it's this close with a small snail, a larger snail that spins better (no bushings) and is cooled better would be better. I expect it would exceed the capabilities of the ignition system on the car, so we wouldn't be able to see max hp till that is resolved (limited to 330 whp)
Common sense says that if it's this close with a small snail, a larger snail that spins better (no bushings) and is cooled better would be better. I expect it would exceed the capabilities of the ignition system on the car, so we wouldn't be able to see max hp till that is resolved (limited to 330 whp)
08-21-2007, 12:36 PM
#29
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Well, it looks like either way I swing, the first thing to do is upgrade the cooling abilities of my engine. I'm thinking MS oil cooler kit for a 2nd oil cooler, the upcoming A/T radiator upgrade, and the Greddy oil pan (also provides more oil capacity for a turbo). Any other suggestions?
08-21-2007, 12:39 PM
#30
racing beat flash or mazsport cooling mod (or DIY) for radiator temps. larger radiator..
oil pan can be used for SC too, since more oil always helps. Though personally, I don't know if the .6 additional quarts is that useful. I bought the greddy pan mostly so that I didn't have to tap the OEM one.
if it doesn't freeze in your area, do 100% distilled water in the radiator, and a bottle of water wetter.
Oh, and drive into the wind, instead of with it.
oil pan can be used for SC too, since more oil always helps. Though personally, I don't know if the .6 additional quarts is that useful. I bought the greddy pan mostly so that I didn't have to tap the OEM one.
if it doesn't freeze in your area, do 100% distilled water in the radiator, and a bottle of water wetter.
Oh, and drive into the wind, instead of with it.
08-21-2007, 01:06 PM
#31
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Okay, writing it down, making sure I got that one....my memory sucks sometimes 
One other thing, is the MazdaSpeed oil cooler any different than the OEM one I could pick up from an 06 model RX8? Dunno if anybody knows this, thought I'd ask though.
Also, can't do the RB ECU flash, cuz they don't like RX8's with Auto tranny's.
One other thing, is the MazdaSpeed oil cooler any different than the OEM one I could pick up from an 06 model RX8? Dunno if anybody knows this, thought I'd ask though.
Also, can't do the RB ECU flash, cuz they don't like RX8's with Auto tranny's.
08-21-2007, 03:27 PM
#32
[QUOTE=TougeFiend; Also, can't do the RB ECU flash, cuz they don't like RX8's with Auto tranny's.[/QUOTE]
It just upsets me to no end that someone with as much prominence, quality products and know how as Racing Beat turns a blind eye to the a/t.
It just upsets me to no end that someone with as much prominence, quality products and know how as Racing Beat turns a blind eye to the a/t.
08-21-2007, 03:35 PM
#33
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Just a little FYI, I had the Coob Tuning Accessport for my WRX, their maps and support are absolutly amazing and I was very happy when they announced the Accessport for other cars, its an awesome quality piece and worth every penny. One negative thing though is that they take forever to develop something
08-21-2007, 03:40 PM
#34
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08-21-2007, 04:30 PM
#37
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Also, compared at the same PSI, the Greddy and Pettit chart would look mighty interesting and I dare say everybody would have a whole new outlook on it. The other way is just drag it out at nearly the same PSI and see what happens. At some point, there will be 10psi Pettit kits, so we will see what happens at that point as far as the chart, track, or street goes.
My 8 at the time just had the Pettit stage II S/C and a TurboXS exhaust.
The other 8 had the Greddy turbo 9psi he would go 11psi with the use of his boost controller. He had upgraded his radiator had the mazport cooling kit. Custom 3in full exhaust (no Cat) and fly wheel. He was on aftermarket 19' wheels Chrome and heavy and had subs in the back.
On 9psi boost I would lead by about 3cars from a dig or a roll.
On 11psi I only lead from .5 to 1 car length.
On both psi setups that was until 5th gear then I would stop pulling.
I don't know if the heavy wheels and subs would make that big a difference. But I am no feather weight I weigh about 200lbs. He was probably like 160-170lbs.
08-21-2007, 04:53 PM
#39
PSI is not a good way to gauge power... It ranges quite dramatically based on tune. With my greddy kit, my possible power range is anywhere from 220 up to 290 range, one guy managed to make 310 out of his, but that's really bleeding edge.
Case in point, the stock int-x map on my greddy made 255 whp, a few minor tweaks and I was making 272. No other changes to the system, same PSI. Also consider the 272 was done when my fuel pump was clogged and the AFRs still quite rich.
Case in point, the stock int-x map on my greddy made 255 whp, a few minor tweaks and I was making 272. No other changes to the system, same PSI. Also consider the 272 was done when my fuel pump was clogged and the AFRs still quite rich.
08-21-2007, 05:12 PM
#40
Please explain why you don't think the SC could at least equal the Turbo in output .
The differences I see are in
parasitic drag vs exhaust restriction
compressor efficiency of a turbine vs a screw compressor
what else could make the difference ?
08-21-2007, 05:57 PM
#42
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Yeah something might be wrong with his tune but It had just gotten tweaked by Scott at mazsport. He lives up in Tampa and was just here on vacation.
With further tweaking like Mysql101 it may have been different.
With further tweaking like Mysql101 it may have been different.
08-21-2007, 06:47 PM
#44
lots of other possible issues. fouled sparks, bad coils, etc. There's a lot of variables .. and it seems like half the dynos I've looked at on this forum have one of the above items wrong...
08-21-2007, 10:22 PM
#49
Destroying Threads
talked to a guy who has a blitz supercharger on his 8 today, he said that superchargers are great for the 8 and all, but he recommended me to go buy a turbo, better bang for teh buck
08-21-2007, 11:58 PM
#50
I do think that if the Cobb AccessPORT ever gets done, Pettit comes out with a stage 3 kit (would like to see that 10psi HP line), and if Pettit ever makes an install video and complete manual... that things would get very interesting. Of course, those are a lot of "ifs" that nobody knows "when" will happen.
I was wondering though what the total cost of the upgraded turbo by Mazsport for the Greddy costs and if they ever did a dyno. Because the present Greddy has decent low end for a turbo, it would be interesting to see what the HP line would be for the upgrade.