nyc_scorpio

iTrader: (1)

Well I just went turbo. My 88 GXL just got a rebuilt and street ported turboII with the tranny and all. Well I needed a full exhaust system so I got a Racingbeat Downpipe, A freeflow test pipe and a Tanabe Medallion Exhaust. Now my question is, what else do I need so I can be ok. I heard of the boost creep thing, So I also went and got a manual boost controller.
What else do I need now. I dont plan on a bigger turbo or racing my car. I just went turbo b/c my original 245,350 mile engine went out
Oh, I also got a air/fuel guage and boost gauge.

texFCturboII

iTrader: (17)

Get an AFC, or get an rtek chip in there so you can tune the car just right. You don't want to be running lean while boosting! You should be somewhere around 12 or 11 on the A/F guage while boosting the stock turbo. Also, a Fuel Cut Defender wouldn't hurt so that you could use that boost controller effectively and crank the psi up to 11 (as far as safety and productivity goes with the stock turbo, 11psi is about as high as you want) Port that wastegate for the turbo when you get the chance, that's the best way to eliminate boost creep. let's see.... what else.... oh yea.... I've seen more turbo's get burnt out cruising down the highway at 5th gear and then boosting while at low rpm's. Obviously the car will boost at low rpm's when you are going WOT off the line, but when crusing try to keep the car from boosting until you get around 3000rpm's. Other than that... enjoy that horsepower!

djmtsu

iTrader: (3)

FYI- a boost controller will not lower boost. So if you are boost creeping, it won't help, at all.

Like he said, port the **** out of the wastegate. An FCD is mandatory above all, unless you can afford a standalone. Even with an AFC, you might not be safe. Just because you can crank up the fuel doesn't mean the injectors can handle it.

Search.

nyc_scorpio

iTrader: (1)

cool guys, I thought of the boost controller b/c I read here that having a str8 pipe with no cats, it will tend to creep, so I just want to keep it low. I told to mech to keep the boost at around 8psi. like I said, this is my daily driver and I dont want to burn it out. I will try to eventually get a stand alone, but this going turbo broke me now I will try to get a FCD to have it put in, in the mean time, its still ok to drive the car??
oh lol what is a AFC??

Wanked_FC

iTrader: (1)

What type of turbo? If its an S4 you'll have to port the wastegate to prevent creep. If its an S5 you may not have to port it, but with your free flow exhaust odds are you will have to port that as well. Its the ONLY way to prevent creep. Unless you have a restrictive air intake such as the factory box, then you might be ok. But porting is best.

cb07

TURBO TIMER!!

I can't really stress that enough. Turbo+boiling oil= no fun. Using a turbo timer will increase the life of your turbo quite a bit! I know from personal experience.

Wanked_FC

iTrader: (1)

Waste of gas on a water cooled turbo. Not necessary on the stock turbo. Now on an aftermarket turbo with only oil cooling its necessary.

djmtsu

iTrader: (3)

^Exactly^

nyc_scorpio

iTrader: (1)

gheesss, turbo timer too, no wonder I always stayed n/a lol
Yes its a S4 turboII engine with factory turbo. only mod is the street port.
When I hear you guys say port the waste gate. how do you port it, I am handy with a dremmel, but how much to port. or should I get a aftermarket one? I am broke right now till friking Sept 28 I only intend to drive the car from home to work, which is only a 15 min drive. Thanks again fellas.

Wanked_FC

iTrader: (1)

Its doable with a dremel, but you really need a bigger higher rpm die grinder with a carbide bit. I did mine myself in about 2 hours, but you have to drop the turbo out of the car, open up the hotside, disconnect the waste gate, wire the flapper open and make the diameter as big as the flapper. Only problem with the S4 is the flapper isnt very big either, so even if you port it, it may not be enough unless you weld on a new flapper. I think theres something in the archives about changing the S4 flapper. It might be on www.teamfc3s.org, I really don't remember.

Noel Caraballo

iTrader: (2)

dont detonate, and no cheap gas

nyc_scorpio

iTrader: (1)

your killing me wanked lol. I guess i am just going to be a scrooge until I save enough for a stand alone and it seems that will end all my problems huh.

you mean no more 87 octane huh. ******* A man. this is going to be the death of me lol. and about detonation. is that when you downshift fast?

Wanked_FC

iTrader: (1)

Just pull the ole buy it at home depot scam and return it. They have a 90 day return policy. I bought an electric die grinder there. Used it for a few days. Cleaned off any dirt with alcohol, and returned it when I was done. . This was of course before I had air tools. You'd then just need about 20 bucks for a bit, and some time. Stand-alone won't cure your boost creep, its a mechanical limitation and a design problem with the wastegate itself.

Heh heh, can you tell I've been thru the same crap you're going thru right now. Modded turbos should run 93.

sharingan 19

iTrader: (16)

So "modded" means free flowing exhaust ? my friend runs 10 psi on the stock turbo w/ good ole 87 octane, hasn't had any problems.

From what I've read, the stock ecu runs rich (10.XX) AFR under boost which could (in theory) compensate for the lower octane fuel.

Noel Caraballo

iTrader: (2)

i would never run 87 in a turbo, have to go at least 92 octane but thats just my opinion. When you start turning up boost and not enough fuel it might just save you for that brief second. But you forsure need the fcd. Get the racing beat one it just plugs right in no sodering needed, and get the air fuel gauge tapped in.

nyc_scorpio

iTrader: (1)

Yeah I did order the racingbeat FCD for $100.00 but my problem is this Noel. I have a freeflow downpipe with a mid pipe, single exhaust.. No cats... So I have been reading that b/c of this set up, I will expierience some sort of boostcreep, and I cant afford to have my engine blow up after I just got it rebuilt and streetported. I am new to the whole turbo thing so its crash course learning In 2 weeks I will get a Apexi AFC. And het my stock wastegate ported too.

freemanrx7

I just bought my first turbo a few months ago. What you should do for the waste gate is buy a used s5 turbo hotside and combine that with your s4 turbo cold side. You'll need an s5 turbo manifold too. You can port that wastegate as well and be done with it. Then when you want more boost down the road you won't have to worry about boost creep. I'm in the process of doing this now.

DON'T PUT ON THE FCD UNTIL YOU PORT THE WASTEGATE!!!!

dwb87

iTrader: (22)

Why don't you just buy an RTek7 v1.5 or v1.7? I mean you said you won't be racing your car... v1.5 would do you good. Plus, all of the RTek7 chips include a FCD... why buy one for $100? Just check out the benefits of the RTek7 upgrades.
RTek7 ECU Upgrade/Information

Also, if you want to avoid boost creep, do as Wanked_FC has been saying and port the wastegate. It's not fun, it's time consuming, but it's worth it.
Aaroncake's S4 Wastegate Porting tutorial (w/ pics)

younG_Gunner

iTrader: (2)

I agree with dwb87.

Plus, if you wanted to mod your car a little more, the RTek is somewhat capable to tuning fuel and timing. Better investment than the AFC IMO.

nyc_scorpio

iTrader: (1)

Thanks alot, you are right, for the price, I might as well get this chip. I love all the wealth of information you peeps have provided me. That was solid. I was about to order the FCD from racingbeat, but I guess I will go with the Rtec 1.5 since the injectors are stock. thanks again fellas

Crap. My mech used my stock n/a ecu. so I am trying to figure out, if I get this chip. can it still be put on the stock ecu, or should I get a turbo ecu? will it mate all up, or the harness is diffrent? I now think thing going turbo and my mech screwed me outta $3000.00 bux lol

dwb87

iTrader: (22)

Check your ECU... is it an N332 or N333 ECU?

Noel Caraballo

iTrader: (2)

if you dont want to spend to much money, just port the wastegate as stated its not hard, looks harder than it really is http://fc3spro.com/TECH/HOWTO/ZWG/zwg.html Even if you keep the stock turbo it still needs to be done to control boost properly.

nyc_scorpio

iTrader: (1)

Havent been able to check the ECU since mt car is 200 miles away once I get it back i will find out.

Note, I called him today and he used a S5 engine with the S4 wireharness.

djmtsu

iTrader: (3)

Who is your mechanic? There seem to be alot of problems that wouldn't happen if he was an RX-7 expert.

nyc_scorpio

iTrader: (1)

Jose at Fuego Racing in Orlando, Fl. I guess I just have to wait till my car gets here this weekend and take alot of pics and take a test drive