sandsurfr2

My new FD is being werid, when i go to take off in 1st gear, even if i have rpms up to 3000rpm will drop down and startes driving really slow untilits gets up to about 3-4000rpms then takes off. This problem does not happen if the car is rolling (like around a slow turn).

Specs..
94 rx7-rebuilt 13b with about 500 miles
-street port
-single turbo (hks T04e)
-hks turbo manifold
-Greddy FMIC
-koyo raditator
-HKS BOV
-HKS FULL exhuast
-Apexi Power FC w/commander
-850 primary, 1300 secondary injectors
-Walboro fuel pump
-greddy proflex b BC
-HKS turbo timer


I just got the car, i know there is nothing on the car older than 7,000 miles, but I have no idea if the car is tuned at all, would weird setting cause weird throttle response??

supraturbo1987

iTrader: (4)

I had that problem on my supraTT when the knock sensor was triggered...i am not familiar enough with the PFC yet to lend any other help. Just a thought.

Trev

sandsurfr2

thanks

anyone??


ohh car has apexi safc too and i dont know if anything is tuned right, i should take it in and have it tuned right? and ask them to see if they know whatsup??

skir2222

Sounds like a tuning issue... why would you drive the car with out knowing its tuned? A tune doesn't cost as much as a engine...

sandsurfr2

i drove it off delivery truck and into my garage that was a mile away....i had to....i need to have it tuned then prob i hope that is it.

Also can contoll boost with powerFC/commander? my proflex B that i was going put in it, got crushed my brother....

life hates me.

1QWIK7

iTrader: (33)

Are you still using the original stock clutch??

If so, how many miles does the car have?

sandsurfr2

no clutch is newer maybe 1000 miles on it, and it works fine, other than when the car starts to take off, but if i downshift to first gear while moving slow it seems to be fine? I have had clutches go on other cars and it dosnt seem like that...

I just taked to last owner, the engine in my car is only about 100-200 miles old and hasnt been tuned and has all the aftermarket parts...Does this sound like a tuning issue?

And if so what should I do...I need to break in engine before dyno tune right??

Any1 that can help I would appreicate it very much.

2ndlucky7

What you need to do is get in contact with a tuner. Steve Kan is a great rotary tuner. look around on Gothamracing.com and you'll see his name. Tell him what mods you have then he should be able to email you an around-a-bout map that will let you brake the engine in with out blowing it.

You'll ether have to manually put the map in through the commander or you can but an FC-Datalogit (the rotary version) which unlocks the PFC and lets you control everything through you Lap top computer. If you buy the Datalogit you can just upload the map into the PFC.

Get that thing tuned right after you break it in or else you run the HIGH risk of blowing it. Also NO BOOST until it gets tuned!!!


Robert

cpnneeda

iTrader: (1)

Uh, I'm not the brightest or the most experienced person, but why would you need a Super-AFC and a PowerFC?

cpnneeda

iTrader: (1)

Uh, I'm not the brightest or the most experienced person, but why would you need a Super-AFC and a PowerFC?

Monkman33

iTrader: (28)

Yeah, piggy backing over the PFC sounds like a bad idea in my opinion. might as well use just the pfc since it has the capability to do everything the safc can do + a BUNCH more.

skir2222

You don't! The PFC controls all aspects of the engine and tuning, the safc is useless since the PFC already lets you rich and lean out the entire RPM range

skir2222

the engine in my car is only about 100-200 miles old and hasnt been tuned and has all the aftermarket parts...Does this sound like a tuning issue?
----

You answered your own question. The car hasn't been tuned and has all the aftermarket parts.... YES you need to get the car tuned very simple. I knew when you started this thread it sounded like right away it hasn't been tuned. Since you already tried to boost with it being untuned you should maybe try and get a compression check before you put anymore money in it... you could have damaged the engine already.

bryant

no boost till break in !!
2000 miles

1QWIK7

iTrader: (33)

lol that could be the reason why he has a problem

TpCpLaYa

iTrader: (10)

i was SCARED to boost before the first 1000 miles of breakin....heh

thats obviously overkill but if you have less than 500 miles i would be VERRRy easy on the throttle

sandsurfr2

my car got pretty hot after a short ride and some oil leaked out?...I had that happen with my f150 lightning, i parked the car right after it got too hot. What kind of coolant should i use, i need some, my brother had my car moved by trailer and i lost some coolant, so the heat problem is fine, im just hoping thats why the oil came out.

Oh yeah my dip stick sucks, its slides in like a blowen out ***** (what im saying it is loose)

But ive got about 600 miles on my new engine...how much more before dyno tune.

SAFC was on the car already

And i dont know if i sad i was running boost before, but im not. and im driving the car like an old person, im like scared as crap because of all the bad stuff that can go wrong


When people first bought these cars and engine werent broke in, did they mess them up from the stock twins running stock boost?

Thanks to everyone for the help.

skir2222

Buy a new dipstick

1000 miles no boost

That SAFC is useless since you have a PFC so you should sell it

When you buy any new car there is a BREAK IN PERIOD

Use the search function it will help you out greatly and read the faq at the top of the 3rd gen page I think it would provide a lot of help to you

sandsurfr2

I cant find a dip stick anywhere, ive searched any ideas.

I know the SAFC is pointless, if you know anyone interested ill sell for dirt cheap.

Ive been reading everything that I can about these cars, ive had/worked on alot of cars, rotary engines are way different. Ive got another car to drive which is cool, but I cant wait for some miles to go by and get this car running to its potential.



besides my engine aftermarket mods, ive got tein coilovers, volk wheels, bride brix II seats, momo stearing wheel/ shift ***.

What else should i do once everything is running good? anything else that would be good for the engine to be reliable, or anything i should replace in interior or suspension. My car needs new paint, im going put either bodykits or front bumper and paint...

Thanks for the help everybody, im going keep this up to date to let everybody know whats going on, and im sure ill have more questions.

Anyone that has any other goos websites with good info or stuff i should read, ive been doing my homework on these cars since i was 16 and i always wanted a FD, but i still dont know crap about these cars, so i really appreciate the help

sorry about long post...

CantGoStraight

If the cars only got 500 miles on the rebuild you might want to run it in properly first before you go trying to hammer it. You start boosting on it and it may truley get broken in. If there is a problem worry about that after it's run in.

sandsurfr2

Im not running any boost and i have driven the car less than 5 miles since ive had it.

I dont know which pulley it is, but the plastic one on the top right is cracked....im going buy a whole new pulley set up, ive looked at a couple, any ideas on what is a good full pulley set up?

A friend of mine that has has his FD for a couple years came over and was checking it out and he said basically what you guys have said, its a tuning issue.

So basically right now i need a new dip stick, im going get all new pulley set up, and just put miles on it for a tune?

does that sound about right?

skir2222

That's your power steering pulley...

1000 miles no boost then get it tuned...

sandsurfr2

I cant even drive my car, its stalling out, and now it wont start. I knew the person who had this car, i know engine is new and all aftermarket mods are not old at all.

and if it starts, i cant drive in low rpms it will stall, especially when taking off from stop, once im just driving and staying at the same speed it is fine. I just want to get all this stuff figured out.

I ordered a whole pulley set, but i cant find a dipstick anywhere??? any help

Thanks everyone

sandsurfr2

Any ideas why it wont start?...it turns over and then seems like its going start running but does not....

i need to get this thing running so i can break in the engine

but at least my FD looks cool in my garage....life hates me.

CantGoStraight

were the injectors gone over while the motor was being rebuilt. My guess is you have a leaking injector issue and now the car is flooded.