10sec rx7

i dont have a 1300hp rx7, mine only makes about 500hp and was a daily driver.
out of the top 4 fastest rotors in the world 3 are controlled by microtech and 1 motec no aem in sight.
they may run a supra fine but rotors are a different thing.

Dale

Rayman93RX7

iTrader: (4)

how much HP does the most powerfull RX-7 have?

10sec rx7

Sigual racing would be up around the 1300hp mark,
corey armstong would be about the 900hp mark
Rocky rehayem would be about 1100hp mark

thats 1,3 and 4 of the top 4

Abel is running a motec from what i have heard, he would be around the 1300hp mark as well.

Rayman93RX7

iTrader: (4)

where is the support for Microtec though? And can you hook a loptop up to it?

10sec rx7

They are getting the dealer support setup now, they have a few dealers over there now, MVA motorsport is one i know off the top of my head.

Yes they are laptop programmable as well as handset, the software runs in windows not dos. they have execlent data logging of all inputs and outputs.

There is rxeng, anthony r, RPM perfromance, and a few other microtech experts on this board always willing to help.

Damon1

They do cost more, but think of how much money you won't be spending replacing engines, axles, rearends, and transmissions I love my RX7, but the Supra is quite a durable platform.

10sec rx7

are you saying that say a 500hp supra wont break a box/diff/axles?? anything has the rish of breaking even at factory power levels.

Rayman93RX7

iTrader: (4)

I have to agree with you on that, but they still cost more than I can pay. And even if I did get one I would have to leave it stock cuz I couldn't buy anything for it since I would have no money left over. As hard as the rotary is to get working the way you want it to(the twin turbo is far worse), there is still nothing smoother at 8k rpm or any rpm. I love the way the body of an RX-7 looks too. Plus I love a challange. I knew almost everything about pistons it's kinda cool to just start fresh with somthing I know almost nothing about. But I'm learning fast.

Damon1

Yes, I am! I have yet to see a 700hp Supra break the stock drivetrain (automatic trans excluded). I was breaking rearends at 400hp. Don't get me wrong, I love my RX7, and yes, the looks are among the best there is. But I wouldn't even put the reliability in the same paragraph as the MKIV Supra.

10sec rx7

Supra turbo boxes arnt that strong, seen them snap behind a decient rotor,

anything will last if you treat it right, i bet i could break a stock rear end in any car with 700hp

Damon1

So exactly how is a rotary different? The ECU triggers spark, at the right time, and injects the fuel at the programmed amount. Where is the magic? Do you think that somehow the ECU "cares" how much power the engine makes?

BTW, I have tuned a microtech, you can keep it.

Also, I know ABel, and he is not making 1300hp, in fact he is about 300hp south of that number. Still quite impressive.

10sec rx7

they are different in the way they spark and stuff, no so much with the fuel dilevery.

What microtech did you tune??

there you go, if you reckon he only has a 1000hp then the microtechs on the other cars look the goods

Damon1

Sorry, I'm not quite getting your slang, what exactly are boxes? Transmissions? Titan makes over 1100RWHP through a stock trans, and RARELY hurts them. And what is a decient rotor? I'm guessing this is a typo, and you mean motor, so what is a deceint motor? It must be over 1000RWHP. So all things being equal, the RX7 box shouldn't be a problem till around 750RWHP, obviously not the case, since I have been through 3 transmissions in the last 50 passes, and at 500RWHP, and in a significantly lighter car than a Supra with ALOT less torque.

I'm betting you can't break a stock rearend in any car with 700hp. Try breaking a viper rearend with 700hp. Jump on over to the supra list, and ask all of the guys there how many of them have broken rearends, and at what level, then do a poll here on this list. Anyone with an FD at over 400RWHP that has drag raced with slicks has split the worm gears in two in the stock rearend. Am I saying the Supra's are invincible? Of course not. Compare the weight, torque and failure level to the 7, and factory Supra parts are 10 times stronger than the stock 7 parts.

10sec rx7

Box= Trans
Rotor= Motor

600rwhp on your dynos is where the T2 boxes start to break on the strip,

As i said any part can and will break if abused.

Damon1

So you think the Microtech is responsible for the power difference? Keep dreaming.

As for the spark difference. Put a timing light on each coil, mark the pulley accordingly (front and rear rotor tdc) and check it. If it fires in the right place, it's doing what you think it's doing. I have done this with the AEM, and it does what it's suppose to. If the fuel is right, and the timing is right, the rest is ALL mechanical

Also the AEM blowes everything away when it comes to features. EVERY pin on the RX7 plug does something, EGT input w/ feedback, boost control, nitrous control, knock control (front and rear), and literally dozens of other Inputs and outputs.

TonyTurboII

Out of all mentioned, the Haltech and the PowerFC have the most support in the USA. Id highly consider that in my choice. The Haltech being the more expensive, true stand alone ECU. It needs all of its wires ran throughout the car. PowerFC is plug and play. Nice feature, and I would imagine easier to tune.

AJatx

iTrader: (1)

PFC for PnP and ease of use. It'll get you going the quickest amongst the EMS, but you're more limited in adjustments than the other EMS's.

Haltech is a proven EMS and has lots of support in the US.


AEM is very nice, but a little more on the advanced side. From the results so far (not theoretical or a one person opinion, but feedback on this forum), it seems that it's not a straight forward PnP. My experience has been good thus far with AEM and I appreciate it more when I see the capabilities compared to my old Haltech E6K.

On the side note, Supras can twist driveshafts and break rear ends if you launch hard off the line. A shop locally has fixed such Supras and some don't make the 700rwhp magic mark. It's not only about power, but how you use it. Hence, Justin Nenni will launch conservatively off the line.
I agree, the Supras are a lot more reliable and durable than the RX-7. It's a Toyota!! However, the RX-7 is a nice track car (even though I can't drive worth a damn at MSR) and gives a very good race car feel as the Supra is more luxury or touring car.

J

enzo250

I wouldn't trust an AEM on a race car. First off im glad some of you had good experiences with the aem(consider yourself lucky). But they seem to have a major problem with injector drivers. Can't use big low impedence injectors. my buddy used one on his honda race car(probably the only race car to use an AEM) and had nothing but problems. Injector driver would fail and he would melt a piston every time.

And so far every customer who has bought an AEM with the exception of one or two has gone bad within the first year of operation.

The most HP the car made with aem was 610, just by switching over to an Accel DFI gen VII he made 670+

Also a sidenote. I wonder why AEM's Race Car uses Motec? If their Product is so good why don't they use it in their own race car? I wonder?

Damon1

First of all, you are totally wrong on the injector control. The sound performance supra's are running 160lb injectors in EACH cylinder with no idle problems at all.

There are several race box's on cars. John Shepherd just ran a 9.35 in his talon, it has a race box, and is running 1000cc low impedance injectors and he told me the unit has done nothing but improve his times and make his engines more reliable. In fact his car is now .5 second quicker since he put the unit on. Your buddy had other issues.

Like you have any idea how many units have gone "bad"! So you are saying that out of the 2000 box's they have already sold, all of them but 2 or 3 have been defective? Your full of it!

As far as you horse power claim to the accel, OBVIOUSLY someone doesn't know what they are doing!

Steph's car isn't AEM's car, it is Stephs car. He just spent over 12k on MoTec equipment, and the AEM wasn't released until after the season started. I wouldn't have switched either.

Most all of the high horsepower cars at the Supra meet had AEM's on them. Mark Tozer's Supra made over 900RWHP on a STOCK engine with the AEM.

Keep smoking crack, it's obviously doing you good!

enzo250

Damon....

How can you say im wrong. I just talking from my experiences... First off im not talking about every aem sold. But from the ones ive seen here in the east coast(about a dozen or so) almost everyone of them has gone bad. And most of them had injector driver issues. they would just die and longer start. +
AEM was very helpful getting them repaired quickly which was a good thing. But many of the owners just turned around and sold them after they were fixed. i don't blame them. One of them had been sent back three times for repairs..

And yes they will idle with 1600cc injectors, thats the thing, you think everything is cool. But all it takes is for one of them to fail just once.

And as for you to say that my friend doesn't know what he's doing is bullshit. He's a pioneer in the honda scene and has been for a long time. Probably one of a handful to make over 500hp in a honda almost 7 years ago.

And Steph's major sponsor is AEM.. And he still uses motec... I wonder what he's using in his new car?

Damon1

Well, I was curious about your statement, so I called AEM and talked to one of the Engineers. What he told me makes perfect sense. There has not been 1 single case of injector drivers failing, in fact the drivers they use self protect themselves (just as the MoTec ones do). The units that have come back have had laptop failure comms issues such as using a USB adapter that relays the information too fast for the EMS to respond. In short, the USB adapters do not drop down to serial speeds completely, and the EMS is a bit sensative to this.

What I am saying about your claim making more horsepower with the Accel, lets take a look at that. As far as the ECU is concerned what makes power? Fuel and timing! Does the Accel unit somehow make better decisions on the a/f ratio, or make better decisions on ignition advance? Of course not. If the units are set up correctly, meaning if you enter 10 degrees advance you get 10 degrees out of the box, and use the dyno to figure out where the timing wants to be, who is at fault when the power is down? NOT THE EMS! It only does what you tell it to do. The AEM smokes the DFI, Haltech, SpeedPro (fast), Microtech, Autronic, (I am probably leaving someone out) in it's datalogging capabilities. So right out of the gate, if you know how to use it, you will get way better information back to make wiser tuning decisions. On top of all of that, the AEM is the ONLY one with knock control feedback. So again, your DFI story is bogus. Any one of the systems if tune properly will make the same horsepower!

AEM sponsored Steph long before they ever started making fuel injection systems. Nitto Sponsors Adam, and several other racers who use not 1 single Nitto tire on their race cars! Does this mean Nitto tires suck, and shouldn't be used on any car that rolls down the street? NO, of course not! So that is completely a mute point.

enzo250

Listen im not gonna argue with you...ECU's are a touchy subject to many people, BUt from what i've seen with AEM hasn't been good... It's still a new system so i guess you gotta give them time to develop. But as for you to compare them to the likes of accel, autronic, speedpro, etc, etc. I don't believe AEM is at their level yet. They simply don't have any proven track record. AND until they do people will not buy them.

And for your information steph did run an AEM in his own race car and ended up switching back to Motec.

enzo250

you know what really annoys me and many other people im sure, about AEM is that before their ECU was available they were claiming to have the best ecu, best value, better then motec, etc,etc.

Then once they became available, and many people gave them a try, they were very buggy and caused problems to many experienced tuners. They would then have to send the ecu back to AEM for repairs and lose valuable time. Maybe they just released it to soon and should have had more testing done first.

It's very hard to get someone to switch ECU's when their already familer with their own. And when they hear nothing but horror stories from other tuners they will never use them.

Damon1

Yes, the AEM got alot of hype. Yes there were some initial problems with the laptop coms not the ECU itself. I believe the system is better than anything I have used, speedpro, MoTec, Accel, Pectel, electromotive etc..
There were, and are a few bugs, nothing serious at all. There are bugs in the current MoTec software, and bugs in the xp software I am using right now. If you look hard enough all software has a few bugs in it, ask any software engineer.

I agree, it is very hard to get someone to switch units when they are familiar with software, hell, I hated going to windows 95 when it first came out. Now I wouldn't touche 3.1 on a bet! Why would you switch unless there were obvious short comings with what you had? Which leads directly to the Steph issue, why would he change mid season if he didn't have to?

Rayman93RX7

iTrader: (4)

bump