Evil Aviator

The Microtech computers have fixed load bands, so he only has 4 or 5 useable load bands to tune on the Ev matrix. Multiply this out by the coarse 500rpm rev bands, and that's less than 100 tuning points per map within a 9000rpm range. Compare this with 1024 points with the Haltech E11 or 1152 points with the Wolf3D4 in its finest resolution mode. I think it makes sense that the simple LT8 requires less tuning than the more advanced EMS products. Also, as mentioned in an earlier post, many people are going to choose the easier "ghetto install" that uses the crusty old factory sensors, so that also quickens the installation process, assuming that the sensors still work somewhat.

Also, the similar Wolf NA installs that I have seen were tuned pretty fast, especially with the older 3.0 model that only had 128 tuning points, which is fairly comparable to the new LT8 in this respect. I have a feeling that his car isn't going to dyno quite what he thinks, as the massive increase in throttle response makes the EMS-equiped NA feel much stronger than it really is. However, disappointing dyno runs tend to show that there are other factors involved in performance besides peak horsepower numbers.

Did you actually dyno your car already for that 200bhp number, or is that just an estimate?

Relisys190

iTrader: (4)

"But like i said, 200 Flywheel HP is very respectable"

^^ This is my goal HP. i HOPE to see numbers close to this...
Saturday morning will have the final word on my HP output once the system is tuned. I personally Scott is entirely too optimistic he states 200 hp is there to be had from a stock port motor, i think otherwise (180ish at the tire) But again, we shall see.

Hey Evil : you know ALOT about EMS systems, if i ever have any questions mind if i drop you a PM now and than?

-Markus Reschny

Evil Aviator

OK, I think this is what was confusing RETed. Thanks for the clarification.

Hey, tune the heck out of that thing and see what you get!

BTW, even after the dyno tuning session, you will probably want to tweak the transients here and there as you drive it over the next month or so, and you may want to take a second look when the weather changes so you can refine your base maps.

LOL, no, I actually don't know all that much about EMS's, but you are welcome to send me PM anytime you like, as is anybody else. However, if you think the discussion would benefit others, please just post in the appropriate forum, and send me a PM with the link if you would like my input.

RETed

200bhp at flywheel figuring in a typical 15% friction loss is 170hp at the wheels, which a DynoJet should read about.

Icemark has already done this with his vert - I think he did 172 to the wheels on a DynoJet on the stock ECU?

200hp at the wheels is different than 200bhp at the flywheel.

I still think you are underestimating the complexity on tuning an aftermarket EMS.  Changing fuel maps is one small part of proper (street) tuning.  Adjustments to cranking, throttle transition, ignition, coolant temp, air temp correction maps also factory into tuning.


-Ted

shiftnmadkwik

pics of the install? i would like to see how clean the lt8 looks on an na setup

Evil Aviator

It can be as clean or as messy as you like. It doesn't have much to do with the EMS itself, but rather the installer and the amount of original equipment that the owner decides to keep or throw out.

silverrotor

iTrader: (1)

This Is the only link I know of Involving an NA and Microtech that contains pics, Impressions etc.

http://homepage.mac.com/carldavis/mt.html

Relisys190

iTrader: (4)

I will have pictures of the install later this week. I still have my air filter temporarily mounted to the Throttle body elbow. I need to get some custom intake ducting and mount the filter AFT the radiator (where coolant overflow bottle WAS.... OR just behind the passenger brake duct (i've allready removed the winshield washer bottle and air relief silencer.)

Please keep in mind, this car is NOT daily driven so i am basically running BARE block, no emissions control or smooth idle equipment. Also keep in mind that running with out emissions is not legal for use on major roads. keep it safe guys and if your gunna race, do it on the track.

Later,
-Markus Reschny
www.mazsport.net

jon88se

icemark also made those numbers with the stock manifold and an airpump w/ cat in place

7thWonder

Lemme ask someone this... i am considering getting and stand alone system... but am i going to notice a good dirference. I called a shop and they told my my motor's design will not cause for to much power... I have an 88 N/A with a stage 3 port with racing beat headers and presilencer. but the thing with the motor is that i had the 5th and 6th port epoxied for more high end hp... now can anyone give me and opinion on whether or not a standalone with help me make more power....?? any post are seriously welcome...

rx-7+vette

If the shop you talked to doesn't think a ported rotary will make more HP with a properly tuned EMS then I'd go somewhere else. They obvioulsy don't know what they are talking about. Almost any older FI engine will show gains if properly tuned with a modern stand-alone EMS when compared to the old factory computer.

Evil Aviator

gsracer

I'm split between going with an e6k or an lt8, but I think you might be over emphasizing the need for new sensors. I bought my car with under 50k original miles less than 2 years ago, every sensor I've come across (virtually all) looks to be in good if not great condition.

von

I made 160rwp with your mods minus the stand alone. Stand alone might give 20rwp more im guessing...S-AFC gave me 8rwp.