Just got my turbo from Pettit. For those interested in keeping the sequential twin turbo, but increasing the output, this may be for you. Their advertized unit is the hi-flo turbo blueprinted, with ported and radiused interior passages and ceramic coating over the interior hot spots. Usually this unit is a rebuilt unit (your core or theirs) for $3500. Due to a scarcity of good rebuildable cores without cracks, they have had to start with a NEW Mazda stock turbo. Price is the same, but now they start with a new unit. Workmanship by Cam is excellent- the interior is smooth as a baby's bottom and larger bore, with no abrupt angles anywhere visable. Cam claims the ceramic coating will substantially add to the durability of the turbo, especially for those who increase the boost above stock. It gets put on this Tuesday. Can hardly wait to get my current oil leaking unit off. Am eagerly waiting to see what new 0-60, 1/4 mile times will be and if I get time- new dyno numbers. If this works out, I'll need to talk my wife into another side-by-side FD vs Z06 adventure. Zoom Zoom.

 

Hell yeah, I'd like to know how those stock sequential twin upgrades workout. I'm thinking of doing that for my car, but for $3500, there's other things that I should be spending my money on for reliability mods since my turbos are still in good running condition. Ball bearings and ceramic coating....mmm, smooth. Let me know how it runs.

your wife drives a ZO6? That's hardcore, man!

 

You paid $3500 for Pettit turbos? Ouch. I hope you like them. I heard they flow about 15% more than stock so you'll get maybe 15-20 rwhp - atleast they are new. For that money I would have fone T04E or S - much better reliability with watercooling. And with that kit - your wife would be way back in her 02 Z06

 

Ask Machinehead

I know he has them

 

yeah, that does sound a bit pricey but i guess u get what u pay for so hopefully that works out well.

 

I dont know why people keep comparing the twin set-up to single....Yes the single turbo kits cost the same as the Pettit hi-flows.....but in order to run that single properly it is going to cost you thousands more to do it reliably...G ....Enjoy your new twins.Mine are on the way.....

 

Can you run a single turbo with the stock system at low PSI while you raise cash for fuel, ecu, etc upgrade?

 

well there are two reasons:

1) my income isn't high enough to pop for them all at the same time

2) the sequential system gives too many problems...so i was wondering if i can get a single turbo and run low boost (like 5 psi) controlled with a boost controller, until i raise more money and get the rest. It's for reliability only, that's the only reason i want the single for now until i tap into it for it's real potential

 

Just to clarify- the vette is mine. She used to have her own vette and a Porsche Carrera a few years ago, which is the *only* reason I trust her to drive it fast. I cringe when I think of her driving it on a regular basis. Her K2500 Chevy looks like she was hauling potting soil in it.... in the cab. Not exactly a clean freak, if you know what I mean.
The Pettit turbo is a little pricey, but mainly cause they have to start with a new factory turbo, instead of a rebuilable core. Did not want a single turbo, since I wanted to keep the low end power that the twin provides. I have enough mods to support the single, if the mood ever strikes me, but I was getting pretty good output with the stock twins at 15 psi.

 

I'm no expert, but I think that going single turbo and running low boost till you can afford the other things you need is a good plan. Anything to get rid of the stock twin turbo crap is a good idea in my book.

Ken

mods: Street port and polished stage II,
upgraded coolant seals,
Hurley 3mm racing apex seals,
XS T04E Turbo,
PFS PMC,
1200cc injectors,
RP Racing fuel pump,
Aquamist 2s water injection kit,
GReddy SMIC,
Pettit ss resonated MP,
Pettit ss cat-back,
under pulley kit(no air pump),
Profec B(12-15psi),

 

Hey Ken, how are you liking T04E? Is that the street racing one? And how much did you pay for the whole kit? Jeff at Rotary Power said he'll charge me 600 for installation

 

i dont think anyone should say that the turbos are pricey to the guy above. im sure he paid for them with the cash in his pocket. no offense im not *******, we all wish were in teh same situation. ZO6 vette, rx7 with new turbos, truck, etc... toys...does it get any better than that. let her drive teh vette its under warranty, but the 7, dont even think twice about saying NO..................
kris

 

Yeah Joe knows cause Joe has them on his......hhmm, exactly.

Let's see. I have Pettit's hi flow turbos and for awhile I was using Pettit's computer with them, hhmm no standalone computer there, just an upgraded one. Fuel pump? Nope, just the stock one. 1300cc injectors? Guess again, still stock. Intercooler? Hhmm, stock too. At 13 lbs of boost it's still pretty rich too. Detonation? No sign of it at all. Makes plenty of power too. Will I go single one day? Probably, but there's things other than my RX that need my money. I'm also running them because Cam told me to run them. Now I don't think he'd tell me to run them if it didn't fit my setup.

Now for anyone thinking of getting them, my recommendation is to get them. They do make very good power and it's definetely noticable. They do seem to spool up a little quicker than stock, and make more power and torque at a lower RPM than stock too.

 

single not reliable?? It's a heck of a lot more reliable than the rat's nest sequential system. That's the reason I went non-sequential to make it more reliable and that's added more power - no solenoids, actuators, rack, and about 70 less vacuum lines - full boost by 3200 rpms. A TO4e gets full boost by around 3500 rpms - not bad and yes, if it's tuned right it is much more reliable than the stock twins and cheaper to fix if a problem arises.

 

Ya, the street kit, the T04s is the strip kit and no air filter. My car s/b done next week. It's at KD Rotary. Dave said the XS T04e kit was the easiest he's ever installed. I bought mine in the RX-7 Store group buy many months ago. It was about $200 cheaper than whatever they have posted now. I assume the $600 includes getting rid of all the stock crap.

Ken

 

The main reason why I went with XS T04e single turbo kit was to have a good power curve for the street and to get rid of all the stock TT problems. I live in an area where there is not much expertise on the stock TT system. Now with the T04e kit everything is simple. The extra power will be nice too.

Ken