mscamp02

iTrader: (3)

Ok I've been looking really hard at getting an FI system (because I'm now selling my bike so Ill have the cash) and have looked at the Hymee and Pettit kits mostly. But then I decided I would take a greater look at all of the possibilities including the upgraded greddy kit from fluid for 4400 and the PTP kit. But the only thing I could find on the PTP kit was this:
http://www.projectptp.rpmware.com/pt.../i-218781.aspx
Is there a cheaper or better place to get it?

czar

iTrader: (3)

unless u go up and ask them, thats their online store. They usually use it for price references. I think its a ok kit, but it inst going to work with a cobb as a heads up without modifying the intake section of tube

FI on the 8 are not cheap by any means ^_^.

mscamp02

iTrader: (3)

ok well I do what to use the Cobb accessport cuz that is what everyone has been telling me is the best. And I know its not cheap I was just looking to see if there were any deals for the PTP like what fluid is doing with the greddy kit

05rx8mazda

iTrader: (4)

I mean u can with F-con or interceptor.. eithr one works. b the cobb allows for a more stock like running car..

just read up on them!

Zeon

iTrader: (1)

Out of curiosity, why do you think it wouldn't work with the Cobb? It appears that the MAF is connected to the CAI pipe a sufficient distance from a bend and its before the turbo. The only thing I noticed was that the BOV wasn't recirculating... Am I missing something here?

cornholio135

iTrader: (2)

Might want to talk to this guy..

https://www.rx8club.com/members/pearl-white-sleeper-40054/

Pear White Sleeper, he went to our texas wide meet last year and has the PTP turbo kit installed by them and it was not tuned for ****... I think he has resolved his problems now...

mscamp02

iTrader: (3)

alright Ill have to pm him then thanks

Charles R. Hill

iTrader: (7)

Try also talking to "tdiddy" as I (and a few others around here) helped him install his PTP kit. I thought it to be a pretty decent kit and it certainly provided some nice power gains.

The reason it doesn't work with the Cobb is because the Cobb works with "draw-through" MAF situations and not so well with "blow-through" MAF placement. It works pretty nice with MAP-based systems, though.

Cam

iTrader: (1)

Charles, care to further explain "draw through" and "blow through" MAF placement. Not following the differences?

Charles R. Hill

iTrader: (7)

Sorry to take so long, Cam. I was building some BHR Ignition Systems last night for shipment today.

The phrase "draw-through" means that the MAF sensor is placed before the turbo inlet in the path of airflow into the engine and, as such, the MAF sensor will never have to measure more than 1 BAR atmosphere pressure while reading the airflow. In this context, reflashes can work quite well for tuning these turbo systems.

The phrase "blow-through" means that the MAF sensor (or MAP sensor) is positioned after the turbo in the path of airflow into the engine and that the sensor will be expected to measure the airflow while also being exposed to manifold boost. In these applications, external EMSs, such as the InterceptorX, are preferred as they use MAP sensors to measure the volume of air entering the engine.

Salamanth

Has any work been done by anyone with regard to using the AccessPort in a blow-through configuration?

My understanding was that it was an issue with turbulence in most blow-through configurations causing inaccurate MAF readings. Could "enough" screens be used to normalize the airflow, or an alternative MAF sensor?

Alternatively, is there an ETA on a MAF wiring loom extension harness so that the proposed relocation of the MAF to the PTP CAI located in the front bumper could be tried? That would put it into a draw-through configuration...

I've been wondering this myself, I really like the aesthetic aspect and turbo sizing freedom of a top mount SFR/PTP kit, however they're all blow-through configurations and thus incompatible with the AccessPort.

Charles R. Hill

iTrader: (7)

Haven't people been making their own extensions?

Salamanth

I know a couple people have done it, but I thought I recalled a discussion between you and another bloke about who was going to develop a plug-and-play MAF extension and he said he was already on it. Am I losing my mind?

Charles R. Hill

iTrader: (7)

I don't remember, myself, where that conversation ended up, if there was one.

Salamanth

One of these days I'll have to have a chat with you about my plans for the future and see what you think. Maybe if I make it out to SevenStock this year!

Charles R. Hill

iTrader: (7)

That's cool and there is always the PM route, too.

Zeon

iTrader: (1)

Right I figured that was the problem with the kit. That's what was confusing for me as on their web site, this is their shot of the engine bay:



I realize there is a disclaimer stating it may not be representative, but that looks a lot like an RX-8 engine bay to me. It also looks like the MAF is pre-turbo in this image. I e-mailed them about this and I have yet to get a response, but maybe they've changed their setup?

mysql

that setup looks like it would work with the accessport. In fact, it looks like there's more than enough space to get the airflow straight for the MAF sensor.

Zeon

iTrader: (1)

Yeah those were my thoughts as well. Hopefully they can get back to me to let me know if that setup is actually what they are marketing now... Unfortunately though I hear they aren't great with responding to potential/current customers which is turning out to be the case so far Probably not a good sign from someone you are buying a large upgrade like a turbo kit from eh?

Cam

iTrader: (1)

thanks charles. thats what i was thinking the differences were.

Charles R. Hill

iTrader: (7)

I would hazard a guess that this particular iteration of the kit wouldn't have much trouble getting a decent tune with the AP. It also looks like some changes may have been made or I didn't know what I was talking about in the first place That is some pretty clean-looking pipework from what I see. The ONLY thing that really bums me out about these types of turbo locations is that the Sohn OMP Adapter does not often work as the exhaust manifold needs the room. There is some good news though; even with that piping the BHR radiator will fit without interference.

Zeon

iTrader: (1)

Charles I think you were right about an older (assuming there actually is a new iteration and that image was it) PTP kit being a blow-through config. I know I've seen a photo of a PTP kit that was routed that way... Didn't someone do some work to make a custom Sohn adapter thing for the front mount turbos or something?

Here's the link I found: https://www.rx8club.com/showthread.p...ght=sohn+turbo

No clue how it works, I don't have a Sohn adapter myself.

Salamanth

Now that I look at it, TDiddy's kit is draw-through as well... I thought it was blow through, I must be

Rereading TDiddy's build thread -
https://www.rx8club.com/showpost.php...&postcount=515
https://www.rx8club.com/showpost.php...&postcount=516

Sounds like possibly the MAF housing could get relocated to the intake (outside of the bumper) and the BOV relocated to the pipe right before the TB. I would be all over this kit if I had assurance it would work with the accessport and some modifications, that's the real killer for me right now.

Charles R. Hill

iTrader: (7)

Well, Sal, since I was there for the installation those threads prove it; I am an idiot when it comes to the PTP kit (and probably a lot of other stuff, too).

Jon

I think tdiddy would be the most helpful, he tested this setup more than we have... I am working on getting a test car for that purpose. It seems like it should be possible to make it work but I just can't guarantee anything without having tested it.

And the white rx8 your referring to had a blown turbo, that's what caused all the smoke.

Jon@PTP