turbo-polak

ok, ive had the car for about 4 months now...

it has 3" turbo back exhaust, bov,huge streetport, cone filter,FCD, walbro fuel pump...

the thing what i dont get is that my friend has a stock port motor, with the same mods made 210whp at 12psi.... on stock injection...

my car feels nowhere close to as quick as his... im getting microtech later this week (if everything works out as planned) and i'll be throwing it on the dyno and seeing what i can do with a stock turbo and TMIc...

any suggestions?

my friend who knows a ton about rotaries said that he doesn think the secondaries are firing...

i rarely take the car past 6,500rpm.. because i know that its not running perfectly..


any suggestions? i was thinking of trying to rent a wideband and seeing what kind of AFR's im having...

cheers,Dan

NZConvertible

If that were the case you'd hit a brick wall at 3800rpm and wouldn't be able to go any higher, but it sounds like you can so that's not it.

How much boost are you seeing?

turbo-polak

7-9 with no boost controller...
i wanna turn the boost up to 10-12... i think that my fuel pump and FCD are good for that boost?...

but definately high boost with my stock turbo will be 12, maybe 14psi with the microtech...


anywho.. ive posted in the local rx7 club to try and see if anyone has wideband i could borrow or rent for a day...

oh, another thing, i still have the same spark plugs in that i used for the break in.. and all the whole time since then... (5,000 km'S)

gingenhagen

you should probably be upgrading your secondaries at 12 psi

Sacker90

Yeah your Fcd and fuel pump are good to that amount of boost...

Definately change your spark plugs though..

tIIsleeper

Port the wastegate to prevent boost creep. Do compression check just for the hell of it.

CompuBob

what type of injectors do you have? anything like a S-AFC at least?
sounds like a tuning issue to me, get your stand alone installed and take it to a dyno.

jon88se

First of all, if you're running 7-9 psi (depending on gear I'm sure) and your friend hits 12, that alone accounts for significant power. How many miles are on your motor? Ever compression test it? How much vacuum does she pull at idle? If you're able to rev past 3800 under load, your secondaries are working just fine.

With those mods, your friends car @ 12 psi sounds about right @ 210 rwhp on stock ports. Both of you should invest in larger secondaries and some method of fuel control (rtek chip or SAFC) at this point. A FMIC would be the next step...

turbo-polak

ya, he had a fcd, and fuel pump as well with a ported wastegate and it was creeping to 12....

he dynoed at 10psi 210whp actually i think... not 12psi..

but ya, he has microtech, 4x 850cc injectors now... but that was before i was referring to..

my motor has 5,000 kms on the rebuild with a huge streetport...

at its best it pulled about 16 inches at 1,100-1,200rpm... i had the idle at..

doesnt pull as much at 850-900rpm though.. it was only pulling about 10..

it should be pulling more, right?.. im thinking that a vac line or two may be busted... so when the microtech comes almost all of them will go.... so ill i guess i'll find out then...

cheers,Dan

Impreza2RX7

If you had a cracked vacuum line your car would run like *** or not idle at all..

p4nc7

iTrader: (1)

question, is he done his breakin period? lol..anyways you also are forgetting that rotaries make most of their power higher up in the rpm range. Meaning, you won't exactly feel THAT much at 850-900 rpm..lol

RotaryEvolution

iTrader: (30)

the difference between 7 and 12 psi even on a stock turbo is quite a bit, i bet if you tuned the car to run at 12 psi this thread wouldn't be up here.

turbo-polak

i wasnt talking about pulling in horsepower.. i was talking how much vacuum it was pulling..



ill let u guys know how it dyno's with the microtech and front mount

thanks for your input...