Hey guys. Im thinking of putting a turbo in my 04 Rx8 sometime soon. I was looking more along the lines of Tdiddy's setup. I know he had some complications with it. Im open to advice, suggestions, and parts that you all have no need for.

 

Wot?!

 

Why?

 

I dont really see a downside in it. I prefer to make things better.

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Then start reading build threads and others in the major horsepower section. Proper. prior, planning is key.

 

And be ready for poor kits and setups out there. And have $10,000 to buy the right parts and all the other parts and equipment throughout your car that you will need to get it all to work and hopefully last a few thousand miles. . And don't even think about doing any boosting unless your engine is in top condition to start unless you are going to build up a new motor from the ground up at even more cost. (I have owned three boosted RXs over the years).

 

I have been doing alot of research but thanks for the advice.

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I got around to installing my kit this month and got everything back together yesterday. I flashed the pcm with an mm custom fi base tune. When i went to start the car yesterday it would crank but would not start up. I assumed that it was flooded and when through the procedures for the deflood. Now it will start but rough idles for about 5 secs before dying. Any advice? Please no bashing.

 

What kind of engine in the car? (4 port or 6 port)
What turbo kit did you use?
What fuel injectors are you using?
What fuel pump did you use?
Did you do the install yourself, or did you have help?
What were the compression test numbers before you boosted?
What ignition components are you using?
What is the mileage of the car?
When was the last time you did a tune up?

So, you installed a MM "custom FI base tune" and now the car doesn't work? Did it ever work with this tune? Perhaps you should contact the person who sold you the tune!

Wait a second......I went to the MM website, and under the FAQ, look what I found:

"I just installed my first updated calibration and the car won't idle. What should I do?

You should revert to the previous version and see if it runs significantly better right away. If it does, bring up the issue at the next scheduled live tuning session. Understand that aftermarket forced-induction setups will take several iterations before they are running well (and safely) in the boosted ranges, so it is not unusual for such setups to idle well but not cruise smoothly or accelerate smoothly after the first update."

Stunning, simply stunning. It took you more time to make this post than it took me to find your answer, and I have never used the MM service. Step away from the turbocharger before you hurt yourself.

 

Well now. Seems that you are having a bad day. I asked for advice which you did give but you couldve left the sas. Almost every issue i have ever encountered with my car i have solved myself. I apologize for asking for assistance and will be sure not to make that mistake again.

Everything is a learning lesson so i will not step away. For those who actually want to help and not be rude:
2004 6-port
Custom ptp
725cc p2
Walboro 255lph fuel pump
I did the install
I do not remember the compression numbers and can not find my inspection sheet. I do know that the compression is good.
Im using stock ignition for right now.
Tune was recently done about a month ago.
Mileage is about 80k

Thank you.

 

How do you "know compression is good"?
How old is the stock ignition?
You say tune was done about a month ago, but you say it was flashed yesterday. Which is it? Did the car ever run fine after you installed the turbo?

And learning is fine, but you need to learn to walk before you can run. Especially with a renesis.
Going turbo without being able to troubleshoot a "won't idle" issue is a bad sign of things to come. Perhaps I'm wrong and you're the exception.

 

I'll help the guy out since I've had this kit, and he clearly doesn't have a good idea what he got himself into from the start.


In any case, for one, you will not be able to use Mazdamaniac or Cobb at all for that matter with this kit. The air sensor or MAF cannot be used since this is a blow through system and will cause too much turbulence for good and accurate readings - so you will need MAP system which uses your vacuum pressure to determine boost levels and tuning. Look into Interceptor X or LT10. Again, it won't work otherwise.

I strongly recommend getting aftermarket coils in the tune of the LS coils before you do any further attempt at running the vehicle. These engines are not very good at boosting when things aren't working at a constant 100% and with the proper parts for accommodation in boost levels. And by not very good, I mean catastrophic damage to the internals. Simply put, stock coils are not up to this job when boosted and you will destroy your engine... it's a matter of time.


Lastly, I will tell you that you will need another set of injectors in your P1 - look into using 500cc and in your p2's 1000cc (although you should be able to fine using your 750cc's...). The reason for this, is because there will be a noticeable lean spot when you are tuning your vehicle. You will NOT be able to tune this problem out. You will need the larger injectors because of the type of staging differences the rx8's MAF system (triple stage) is compared with the MAP based system (dual stage)


Good Luck.

 

^-- Agreed, if you put in a PTP kit as the kit was originally designed then you will have problems with flash tuning... However, if you make some modifications you will have some nice results

As far as it not idling... You mentioned P2 injectors but what do you have for P1 (and aux while we're at it) injectors? I have no clue what is in the MM base tune, but if the P1s are different that would be an issue to even get it idling. Are you using the MAF tube that came with the PTP kit? It's too small diameter and in a place that will cause airflow turbulence, even with the right diameter. Mine was a pull through, not blow through like BlackStealth mentioned, but maybe there were different versions.

You can see all the changes I made to my PTP kit in my thread if you haven't read it already:

https://www.rx8club.com/series-i-maj...-build-243099/

 

^ What he said. And the PTP kit I have on hand is a pull thru as well. But it will hardly be a PTP by the time I am done with it

 

Well get crackin' man! I have a feeling you will come up with some improvement ideas that I can steal!

 

I am almost there, I have just been busy getting this engine up to my standards and back in my daughters soon to be GSR,

 

Thank you guys for the advice. I am currently looking into new coils and was thinking about the bhr kit. Slash i have def used your build thread in my decision and incorporated the maf setup you have. I did increase from a 3 to a 3.5 with air straightners and my kit is a pull through as well. I reverted back to an earlier tune 2 days ago and it started up and idled just fine. I will just be waiting on an updated fi tune that will allow it to run fine. Also i have stock p1 and aux.

 

Hate to tell you this 9k ..... but that isn't a rotary !

 

This I know, because it has 200k on it and still has good compression,

 

Haha! Well, anything non-rotary doesn't count towards being busy

 

Sounds like you are working towards making the "fixes"

I'd also suggest getting a copy of ATR and start learning to tune it yourself. Over the course of my build I changed so many things along the way that required adjustments to the tune that I really needed to be self-sufficient.

 

So I've heard you can turbo with stock internals just wanted to know if it's true or not.. Thinking about getting the t3\t4 turbo kit would that work or would I have to get a engine rebuild I would obviously get it installed by professionals and tuned but wanted to know if my engine would blow or not.

 

Search, young one. The googles are your friend

 

Mine drove fine to work today...



So yup, you can.

Travis

 

As stated, do a lot of research on the subject.
And I would want to use a healthy engine if turbocharging. So, I recommend at least having your compression checked, before you begin the work and end up having to rebuild after going through all the trouble