amemiya

will here is my dyno sheet even though I couldn't go above 5000 rpm.

mods are:
greddy intake
m2 down pipe
hks cat back
gutted cat
16-18 psi
greddy e manage


the car wouldn't go above 5500 rpm it would back fire and sputer. It was running way to rich and I couldn't get the boost down to a safe level I am going to fix the boost problem and get a aqua mister setup and then go again the guy at the dyno did some calculating and siad it should get between 330-350 RWHP. So I will post the new sheets soon.

amemiya

sorry I will have the pics up in a few,, AOL sucks my left nut.

Tanabe

i heard the stock turbos can't manage more than around 14 psi maybe i'm wrong. be careful boosting that high w/o an aftermarket I/C.
if you get a pic of the dyno sheet post it

amemiya

well I can't ge the picture up cuz AOL sucks so it pulled 278 hp at 550 rpm and was pulling stright up I could go any hire because it backfired because it was to rich the air fuel ratio was 10.7 I would have pulled 340 if it would have kept going.

amemiya

I have a pic but when I try to upload it to my website on AOL it goes to "webpage not found" that is a suck. any other way to get it online like any free website places?

OneBadRx7

You are saying you could hit 350rwhp with an intake, dp, gutted cat, catback and an e mange??? is that possible? are you running the stock twins and is the GReddy E the only means of ECU altering? I am running dp, mp, cb, pulleys, intake, fmic, full ecu and non-seq and I was going to go get dynoed next month in which I was hoping to be hitting 350-360, how are you doing this with so little done to the car?? Also as brought up before, you are running 16-18 on the stock twins??? They cant do that, neither can the stock injectors, if your numbers are real then I am missing something or you arent telling us the whole story

yy4u

yep definitely need fuel mods (injectors at the very least) to get 350rwhp or to run 16psi -

Tanabe

i think yahoo has free space for pictures.
is that ALL the details???

amemiya

how do you figure that when I can't even get it lean enough to redline????

Tanabe

OneBadRx7

I would figure if you are running 16-18psi on the stock twins with the stock ECU and injectors and you are running lean then there is something seriously up, until I think about it I dont know what but it doesnt make sense, I would question your logic. Were those all the mods you have done??

yy4u

You never got it to redline i thought- if you show me a dyno chart with A/F ratios on it, showing that you are rich at 7500 rpm, then i'll believe it. Obviously the stock injectors can flow enough to make you rich at 5500rpm and produce 280rwhp.

amemiya

here you go

amemiya

the RX7.com fuel calulater say that stock injectors should be good up to 338 RWHP so we should good up to that. I am not trying to run that much boost I just can't get it down but the wide band shows I have way to much fuel and the car back fires if I take it above 5500 rpm.

amemiya

I gues I will just have to port the wastegate alot more.

RX7Elmo

the fuel calculator is assuming 100% duty cycle. I'm not sure if you'd like to run that high.

Also, isn't that a bit lean before transition? I wouldn't like my car to be at 13 A/F in the lower revs like that.

Danny

amemiya

the guy didn't give 100% throttle till about 3000 rpm but I think it is pretty good since we don't have any boost yet.


and that fuel calculator lets you set your own duty cycle I set it at 80% to get that reading and yes I would upgrade the injectors but I don't plan on running that much boost.

OneBadRx7

Ok so you say they SHOULD be good to 338rwhp but yet you claim your car could have done 330-350, how so if your injectors, providing EVERYTHING else was perfect are only good to 338??? Logic, logic, logic!!!

OneBadRx7

For having a pretty good amount of posts I question your knowledge, were you possibly a post *****??

amemiya

man you guys are missing the pint I am not trying to get 350 HP I just want to get the boost down to 13 psi and get my fuel maps right. I could care less about how much HP I am making I just don't want to blow my motor I just thought that was interesting that it would have made that much HP, and if I do get begger injectors and fuel pump and intercooler how cool that it would be to push 330-350 hp.

OneBadRx7

I think your post was lost....I can boost my 7 up to 18psi, run it on a dyno until god only knows what rpm, until "it couldnt rev any higher" aka..BOOST CUT and/or FUEL CUT and make a ton of low end hp then "calculate" what I could have made IF things were going right, which means my turbos could have maintained the boost all the way through the rpms. which of course they couldnt. You wanna know how to keep the boost down, was THAT the basis of your post?? if so...GET A BOOST CONTROLLER, easy as that because you dont have enough mods to make porting the wastegate "necessary", bye

GsrSol

The stock injectors will max at around 330rwhp and if you run that for a while you will wear them out.

The more you port the wastegate, the thinner the walls get and they will probaly crack.

Can't you adjust the fuel with the e-manage?

Tanabe

nice

maxcooper

You were rich, but not WAY rich. You should be shooting for low to mid 11s on the mixture. You might have been breaking up because of a combination of things -- rich, too much boost, not enough ignition.

Also, the RX7.com fuel calculator says FLYWHEEL HP, not wheel HP. 360-ish RWHP seems to be the most power you can make with stock injectors at 100% duty cycle. And it isn't under enough control for good tuning at that point.

I wrote a similar fuel calculator web page that lets you play around with the numbers a bit more:
http://www.maxcooper.com/rx7/how-to/...tem/calcs.html

-Max

rynberg

Has no one noticed that his A/F ratio GOES TO 17.5 AT 5500 rpm!!!!!!

Running a 10.7:1 is leaner than the stock car, so that isn't what is keeping you from going past 5500 rpm. You are hitting some fuel drop-out either from your injectors maxing out or your fuel filter is clogged or some other reason. How does that E-Manage work with the stock ecu?

You need to figure things out before you run the car hard again.

BTW: just is case it hasn't been mentioned enough times yet -- REDUCE YOUR BOOST! You are running the stockers at 16-18 psi with the stock intercooler? That is insane. They will burn out in a month and your intake temps must be blazing hot.