my FD is near stock besides a greddy BOV, and i heard that a downpipe will make the car run lean and blow the engine. Is there any tuning i need to do before installing a dp?

Isnt a dp a "reliable" mod?

 

You are thinking of a mid-pipe. A downpie is a "reliability mod". It will not cause your air/fuel ratios to go lean and detonate.

 

just a down pipe wont make your car run too lean, just a down pipe is considered a "relaiblitly" mod...

 

these were the first things i was going to put in my FD

1) Dp
2) Aluminum Ast (which brand is a good one?)
3) Aluminum radiator... thinking about a koyo...

maybe an exhuast and intake down the line too. I dont really need an FC or an EMS do i?

 

Can't run more than 3 mods that affect power IE intake, catback, downpipe,midpipe.

Best bet is to do what you just said, and add one more mod to that list. I would not run a DP, catback and open filter elements because boost spiking might become a issue. So basically, you can add a number 4 to your list,

I'd personally do a catback, keep the stock airbox and go to Racingbeat.com for their cold air duct and get a Drop in K&N filter. You'll get the best of open filter elements with those two things i just said without the boost spiking issues.

 

I have a brand new HKS DP for sale...... $200.00 + Shipping. If you want it with the DEI header rap that is already on it then It will be $250.00 + Shipping...

HKS DP online is $279.00 + Shipping...

 

Not true. Please don't keep propagating that myth.

And that's what a boost controller is for.

A RB intake duct is essentially the same thing as any aftermarket intake and can lead to boost spiking as well.

 

i dont care if you think its a myth or not. 3 mods and thats all your car can handle. you can put your gay boost controller on your car all you want, but its not going to do anything to prevent boost spiking. Say what you will i dont care, and a racing beat duct wont lead to boost spiking. Again, your input to me doesn't make a difference since these mods have been tried and proven on a few of my buddies cars.


porting your wastegates is the only true way in addition to a power FC to "safely" handle a full exhaust

 

here we go again...

 

yea its why i dont bother posting on rx7club usually. figured I'd start again but i guess i might as well just stay on np.

 

Heh, you have a lot to learn about these cars. Perhaps you should stop and learn something instead of being a smart ***.

We're not talking about a full open exhaust. If we were, I agree that a midpipe is a serious mod and should only be installed once other fuel/ecu mods are in place. Not everyone experiences boost creep (not spiking) with a midpipe though. And you can add a restrictor plate to the exhaust to also eliminate boost creep rather than porting the wastegate. Not an idea solution but it does work.

 

Because you don't like getting called out when you are wrong? Please feel free to stay at nopistons and remain ignorant.

 

gah! i dont know who to believe here! i know full exhaust well jack **** up for sure, but intake and catback and all that?

i also am wanting a downpipe here but i already have intake/catback...yeah i started with the easier stuff first. now no matter what anyone says i think im gonna be too paranoid to do it....god damn it! haha

should i get a power fc/wastegate then just save money and buy a downpipe midpipe together? u dont really need a boost controller if u get a better wastegate do u? and gay question, but how much does a power fc jack with gas mileage? just wondering

sorry to hijack but hopefully these q`s can help out our good buddy who started this topic, as well as me thanks for help! and bearing with my questions. im still just an n/a fc guy really x__x not 100% confident with my 3rd gen knowledge

 

Well ****, i guess ive been screwed for the past few months running full exhaust and not a ported wastegate....

Well then again i do have an aftermarket computer...Its just not a PFC...

I havent had any boost problems to date with my set up...

 

no because jack asses like you are here. what are you the quote master ? every single thread i go through you have a post that always putting someone down. does that make you feel good that your teh interweb gangsta ? you go run your setup and ill run mine, doesn't mean mine is wrong because you dont agree. but i forgot you are the all knowing :rollseyes:

 

PFC doesnt effect gas mileage...The tune does...

I would get a dp right away. Keeps temps down, and it lets the turbos spool faster.

 

Hardly. I can certainly be harsh sometimes, it's a flaw that I'm well aware of. It gets exaggerated by the internet medium and by other's testosterone levels. But I also try to help people here every day, as well as trying to learn more about these cars. I WILL call out someone when they are wrong (which isn't hating or being a "jack ***" or whatever you want to call it). I expect other members here to call me out when I am wrong -- and they have.

Your setup isn't wrong but your beliefs are. Wade was kind enough to dispel the 3-mod myth years ago and many of us, including myself, have subsequently proved it for ourselves with WIDEBAND DATA. What's your proof, something you read on Robinette's site from 6 years ago?

 

I just have a modded/opened up stock airbox, downpipe and cat-back. I was seeing boost spikes of 12 - 13 psi, enough to hit fuel cut-off before I put the cat-back on, and I popped my engine within a week of putting on the Racing Beat dual-tip exhaust.....so I can attest to how in some cases, like mine, just a few mods can have significant effects. I'm just playing Devil's advocate here and throwing in my real-world experience. This certainly doesn't diminish what people who have done dedicated testing with sophisticated equipment have learned, I'm just saying certain conditions and circumstances can and have played havoc with only very mildly modded engine set-ups....

 

See, only three mods and BOOM? Guess the 3-mod myth didn't help you out there...

If you had installed a boost controller and kept at 10 psi, you could have installed an exhaust, a hi-flow cat, an IC, hell even streetported the damn thing, and still would have had very safe A/F ratios with no boost control problems. Wait, that's 6-7 mods and you would have still been safe!

The 3-mod "rule" is false. It's been proven wrong many, many times in the last few years. I wish that whole section on Robinette's site would be removed so that this myth would stop propagating.

 

[QUOTE=rynberg]Not true. Please don't keep propagating that myth.



Ha, Sometimes it seems like this fourm was created to propagating myths.


But all the same, there is a wealth of information here, just becarefull to seperate the wheat from the chaff.

 

I had intake, cb, dp, and and M2 stage 3 ECU and my **** topped out at 13.5psi. Never had any problems with the boost. Except for that one time I'm sure Rynberg still remembers at the dyno day where I left out my restrictor pill which caused me to boost at 7psi max. Anyhoo the 3 mod rule was what I first learned about but then disregarded it when I found out that EVERY SINGLE CAR OUT THERE IS DIFFERENT FROM ONE ANOTHER


btw, sup sup rynberggggggggggg

-Dan

 

All he did in his first reply was say that it was a myth. Your first reply was to call something "gay" and then start calling him a jackass and an e-gangster.

So who exactly is doing the e-thugging here?

 

The 3 mod rule is a rough guideline. Regardless of how 100% true it is - most of the people who follow it will be blowing engines a lot less than the ones who don't.

I don't think we even need statistics to back that one up.

 

And yes, I do agree with rynberg that the main issue is boost control in the first place.

 

I'm still an FD newbie...but since I too am just starting to do performance mods to my car, I have tried to do a lot of research. From what I've learned, the 3 mod rule is an old guideline that doesn't necessarily apply to any given FD. It may work alright for some but the real guideline to look out for is boost. On the stock twins, as long as the 10-8-10 boost pattern is maintained relatively closely, there shouldn't be any problems. If those stock boost levels are exceeded (regardless of whether 1 mod or 5 have been done), an ECU or boost controller type device is necessary to keep the boost and A/F ratio in check. This is basically what rynberg said I guess. Just posting what I've learned.