tomaszjc7

I have a R1 Rx7 and was wondering if a haltech ecu is better tahn an M2 performance ECU?

Street King

Well the M2 is a piggy back unit and the haltech is a stand alone computer. M2 is plug and play but not as efficent as the Haltech. But with a Haltech you have to program it or send it to some one who knows how to program it. If you are no expert in the field of programming then leave it to the experts to tune it. If you want just an easy plug and play to go along with a few mods then the M2 is the way to go!
Lightly modded= piggy back system(pettit, M2, G-Force)
Heavily modded/single turbo/larger injectors and so on=programmable computer(PFC, Haltech, AEM, and a few others)

Crazy_Jake

Probably be better off with the haltech cause it allows you to continue upgrading. And you will upgrade, cause once you get used to the power, you gotta have more. It's like a drug!!

solo1seven

Hi,

Just wanted to clarfiy something regarding the pettit/M2/Gforce ecus. They are by no means a piggy back unit, they are a reprogrammed ECU. A piggy back is something like the apexi SAFC which works in conjunction with an ECU and must be spliced into the wiring harness.

Street King

Sorry about that I just thought that the piggy back meant the same as reprogrammed . Thank you for clarifing that! Still working out the tweeks on giving advice. Thanx for the no flame.

dzungh

Word. Flames belong in only one place...my tailpipe.

tomaszjc7

Ok so i have decided to take the HAltech E6K ECU, now i want o know if i need, a feul controler like the greddy rebic IV, and if i need a boost controller or can i do all that with the haltech??

THANKS FOR ALL YOUR HELP!

tomaszjc7

THIS IS WHAT I AM DOING TO MY CAR. DO I NEED THE HALTECH OR THE M2??

1993 Mazda RX7

Suspension: Tanabe Sustec Pro Street Coilover
HKS Stability Bar

Powertrain: ACT strip/street clutch+ aluminum flywheel
RP High Flow Throttle Body
Mazda Speed short shifter kit
Carbon Fiber Driveshaft

Exhaust: HKS turbo exhaust

Gauges: Greddy Boost, Greddy E.G.T
Greddy Temp., Greddy Fuel Press.,
Greddy Oil Press.

Intercooler: Greddy Intercooler Kit Type 32R
Greddy Piping kit STD I/C 3 piece

Fuel Components: Denso fuel pump

Blow-off: Greddy Type-S

Turbo: Greddy Twin Turbo T-78
-S.S. Turbo Manifold
-Downpipe
-Wastegate Type R

Electronics: Greddy Rebic-IV or HKS AFR
Greddy Boost and Speed Cut Controller
Greddy Turbo Timer
Greddy Boost Controller PRofec B-spec
HKS Twin Rotary Ignition
Racing Beat ultra Ignition wires
Haltech E6K ECU

Tires: Nitto 555 extreme

Brakes: Brembo Sport Brake System

WHITCH ELECTRONICS DO I NEED AND WHICH ONES DONT I NEED?

tomaszjc7

AND SOME OTHER QUESTIONS?

My rx7 is equipted with the R1 pakage. And i was just wondering if i need to change the stock dual oil cooler to a new one, and if i need a new radiator?

RexTech

Get a radiator, Koyo or Fluidyne.
Is my opinion that you don´t need upgraded oil coolers.
A better radiator helps to keep your oil cool too.

black99

If you are going with a single turbo upgrade then you want the Haltech, you can use the stock oil coolers unless you want to upgrade them, which you can www.rotaryextreme.com sells a oil cooler upgrade as do some other performance places I believe. Usually 3rd gen owners upgrade their radiator for reliability purposes, so I would suggest upgrading your radiator since you have a long list of expensive mods anyways.

You need to add a fuel rail for bigger secondarys into your equation probably, I would. And 2 bigger secondary injectors. As for the cf driveshaft there is a thread in this section discussing them and it's been determined that they don't do a whole lot for you, so if that 1k is really burning a whole in your pocket then get a Limited Slip Differential instead.

I don't think you neither these but I could be wrong..
Greddy Rebic-IV or HKS AFR
Greddy Boost and Speed Cut Controller


And I know you don't need these if you are running a FMIC
Greddy Piping kit STD I/C 3 piece

black99

Are you running that t78 on a stock motor? I wouldn't planning on running to much boost because the stock ports on the motor will just clog the air flow. If you have the extra 4-5k then invest in a ported/rebuilt motor too. A rebuilt/ported motor will work MUCH better with that t78.

tomaszjc7

I have a stock motor, but it is brand new with only 50 miles on it. Its just a stock engine from mazda that was put in by the dealer. I was planning to put in 3mm apex seals, but im not sure because i heard that you only need to put them in for a car with 700hp and more. My car is only gann have 450-500hp. I didnt really want to do any porting, so do you think i would be better of with a smaller turbo??

FavBandDMB

I think you should go with AEM for all your electronic needs. haha

tomaszjc7

Piotrus, ty przeskurwicynie.

black99

Personally I think you should either port your motor or go with a smaller turbo that is better to be run at a lower PSI, but as for turbo reccomendations I would consult with the single turbo forum for more. I would go with one of the XS kits..

Trexthe3rd

Ummmmm, is it just me or this sounds like keyboard warrior from la la land. I will apologize for being synical up front. Here are the reasons for my utter disbelieve in this thread:
1. "Greddy twin turbo T78", where do you plan on putting this monster twin turbo?
2. The mods on your to do list will cost well over $25,000 not including the cost of the car. Are you doing them? If so, you should have plenty of advanced automotive knowledge to select the correct control unit. And certainly would not be comparing a programmable ECU with a reprogrammed one.
3. If you are having it done by someone else (which will centainly bump the cost up to a tidy sum of over 30 Gs) and trust them with the mods, why not take their recommendations on the appropriate ECU??
Again, sorry for the disbelieve, lately there's been too many keyboard junkys from fantasy island signing on to this board and wasting bandwidth.

lane_change

iTrader: (20)

You must have one hell of an engine bay to hold Twin Greddy T78's. My god man. Plus for fuel components you list a Denso fuel pump. Kaboom. Where are your huge injectors and and rails?
I would assume that Twin T78's would need a gas tank all of their own.

black99

Just to asure you I thought that was a misprint so anything I told him was for 1 t78 not 2... But you guys are right I'm kinda wondering why I am wasting my time giving this guy input and not letting him find out on his own..

tomaszjc7

First of all T-78 only come in a single turbo package. And the whole "shpeel" about the money, its really not a problem, i have been saving up for one hell of a long time. About the T-78 not fitting into the engine bay, i was planning to get the battary relocated and the guy that i consulted to about my mods just did a greddy t-78 upgrade on a 93 rx7 and he said it would fit just fine.
About the injectors, if i were to get the Greddy rebic IV it comes with, i think 750 primary injectors, but im not sure. Black99 the only reason i am posting things on this forum is becasue i need YOUR help. And i apreciate any input that you give.

tomaszjc7

How is this for the injector lineup:
950 cc/min primary injectors
1300 cc/min secondary injectors
Two 550 cc/min additional top fee inejctors mounted on the Greddy elbow

And what kind of spark plugs do you think i should get?

lane_change

iTrader: (20)

[QUOTE]Originally posted by tomaszjc7
[B]THIS IS WHAT I AM DOING TO MY CAR. DO I NEED THE HALTECH OR THE M2??


Turbo: Greddy Twin Turbo T-78
-S.S. Turbo Manifold
-Downpipe
-Wastegate Type R

We are just going by what you said man. Yes a T78 will fit fine and your new fuel system idea sounds pretty descent to me. I am not sure on what plugs to use for a single, but I would assume just to stick with the NGK Platinums but I may be wrong. But if you have this kind of money then I would go with the 20b. Pettit builds the Banzai package or you could go with some other companies. It will be around 30-40k but you'd have a bad *** car. Anyone can go single eventually but few have the option of a 20b unless they want to sell their house, wife, and kids.

FavBandDMB

about what lane change said earlier, are Denso fuel pumps not good? (kaboom?)

lane_change

iTrader: (20)

I just meant that all he said he had for a fuel system was a Denso fuel pump. They are fine, but w/o injectors and such he would run lean and kaboom.

tomaszjc7

Sorry about that, my mistake i didnt realized i posted "twin turbo" in the list.

Now, does anyone think i need 3mm apex seals?