I finally got my car on the Dyno this weekend with Steve Kan doing some tunning for the Phoenix Rx7 group. I loaded my car up and headed to Phoenix for a day of tunning.



I asked for a conservative tune being that this car is street driven with occasional track use, so we aimed for a 10.8 AFR across the board and which we got.



We hit 467.5 at 19psi with a 50/50 mixture of 91 and 101 octane gas. That was around 7000 RPM but we lost the tack signal on that run so we missed out on the RPM and torque measurements. The next run at 20 psi we saw 466 HP at around 6k and then Steve let off sensing a slight ignition breakup. This was on BUR9's all the way around.



On pure 91 ocatane we saw421.8HP @ 7100RPM 15-16psi with 322 torque and so this will be my "street trim".



I have an aquamist setup with was not functioning so that'll be turned on, and I'll be modifying my ignition, adding another fuel pump and modifying my turbine houseing/DPsetup and a few other things.



I'll try to get the graphs posted but they are really light and my camera isn't picking them up, so I'll have to find a scanner.



MODS



-Chris

that **** is ******* awesome.....

go 2nd gens.



kevin.

Nice numbers.

Now you're making me want to stay up late in my garage! https://www.nopistons.com/forums/pub...IR#>/angry.png Good numbers!

nice job man .. https://www.nopistons.com/forums/pub...IR#>/smile.png im hoping to put down similar numbers.. lol.. without blowing my **** up :(

Nice #s!

very nice. How's the response on the turbo?

I'll have to actually look the next time I'm driving it. Steve said on the dyno he was seeing 17-19psi by 3900. It feels great to me.



I do know that from lack of time, the port match between my manifold and turbine houseing is HORENDOUS!! My 2in manifold runners practically hit a wall going into the .84 turbine housing (I didn't realize the inleft on the housing would be so small when I cut my divided T4 flange and "rectangularized" the tubing), so there is certainly some response to be gained there.

nice numbers...

That's one sexy ass engine bay you have there... AWESOME numbers too. Good job!!

17-19 psi by 3900 rpm! Jesus christ... https://www.nopistons.com/forums/pub...IR#>/bigok.gif



This is all with a streetport?

Hey hmmm



10.8 AFR's ?



damm should I be worried https://www.nopistons.com/forums/pub...O_DIR#>/11.gif , I'm running 11.9's on WOTs

got reading from street tunning wideband not on a dyno yet

but there is no break up or hesitation



I'm running 14PSI

so is it best to lower the AFR's as you increase the BOOST?





I'm going to see If I get my car to a dyno this saturday, if I can find one open

just to do a base pull

Hmm Well I have to say you have a really nice car!! I don't say that very often so I really mean that. I am interested in the pillow ball sway bar links and stuff you have on there...where did you purchase that?



again looks like you put a lot of time in to your car and did things right.

This is a street port, although a fairly agressive one from RP a few years back. I forgot to look at the boost gauge today for boost buildup... I still want to check that myself.



I'm not super knowledgeable on tunning... I was under the impression that 10.8-11.1 was a good target for reliable power. I don't want to speak about what I don't know very well though and lead you in the wrong direction. I built the car, but I paid Steve to tune if for a good reason. https://www.nopistons.com/forums/pub...#>/biggrin.png



Pillow balls are part of the Zeal Function V6 setup. Swaybar links are RB and can be had directly from them or mazdatrix. I got the Zeal suspension from Rishie at Automotive R&D.



-Chris

Dude, that is fuggin great...



I'm shooting for a little less with a similar setup(I only want 425whp)...this gives me more faith that I'll get there,lol....only dif is my tuning will be inhouse by me and the guys...lol...

https://www.nopistons.com/forums/pub..._DIR#>/sad.png man I need a garage to work on my car..if I had one my project would be so much further alon.. DAMN that some cool **** you have on that fc. hope I can get mine like that. Just a question. Seeing is you did all that why not do the fd uim upgrade?

haha. That is probalby the most common question that I get https://www.nopistons.com/forums/pub...IR#>/smile.png



I guess a couple of reasons, primarily, I haven't seen any *proof* that this is actually a performance "upgrade". I have heard numerous people claim that it gives more power... but I have yet to see any actually dyno results. Several people say that Soul Assassin made 25more HP with a ported FD UIM on his FC... but that to me is a worthless comment. The fact that it's ported negates any comparison to an FC UIM... I personally could see porting an FC UIM gaining 25 HP on a 600+HP car also. I'd love to know the truth. Perhaps someone actually has dyno numbers comparing the two?



Additionally, I wanted there to be a sense of uniquness about this car. Sure I could have purchased an FD, but lots of people own high HP FD's, so I chose to stick with the FC platform. Of the people with high HP FC's several tend to put the FD UIM on. So I chose to shave the extra numbs etc from the UIM and smooth it out a bit to give a bit nicer finish.



Having said all that, I did set out to build an optimum/efficient designed car, not just something that works, but something that works well. I still intend to port and match all my manifold pieces and TB as well as some additional work to my manifold to increase the efficiency. If the FD UIM proves to actually increase power (and by all means someone show me that it does), then I'll probalby add it. Until then, I'll stick with the FC parts:D

well said.



Whats the A/r on the turbo you have?

https://www.nopistons.com/forums/pub...#>/biggrin.png ok. thanks for taking the time. I've also herd several claims on hp gains from the swap.. I believe dave from fc3s.org has done it before can't remember. but the hp gains are more likley around 10-15 hp

.84A/R... with a 4" DP.... I was running on some theory that was mentioned to me once which drove my decision to use the relatively large compressor (for a street car) .84 turbine, two tial 38mm gates and the 4"DP. I have been questioned repeatedly about my decision to go with this "odd" combination of parts. I would say based on my results, power, spool etc, that the theory played out pretty well. I'll find out the limits once I crank up the boost a bit more.



Also, I should add that I mean no disrespect to owners of modified FD's when I said there are many out there. I love the cars and will probably own one someday. It can be irritating at times when people discount the car simply b/c it's an FC chassis or even FB for that matter. Many people immediately assume that the FC and FB owners simply can't afford the FD's when in many cases that isn't true at all.



Sorry, I tend to be very long winded https://www.nopistons.com/forums/pub...#>/biggrin.png

Seriously, if you see some proof of this in the form a dyno graph I would love to see it. Also, if someone can first hand say that they have seen increases on a dyno, I'd love to hear that as well. Just for me at this point, it seems to be an urban legend... might as well be a "Type R" sticker. HAHA



Ok that was harsh, but I'm certainly not opposed to the swap if it is actually a power benefit https://www.nopistons.com/forums/pub...#>/biggrin.png



I have been looking for proof, point me in the right direction please!!



-Chris

True Like I said i'm not quite sure if he did it or not. I guess it don't really matter that much considering your car looks great and has some outragous #s to back it up. What do you think of the gram lights? and what bushing kit is that you have pictured with you sway bars?

The wheels are nice... I prefer a polished lip so I'd get the pros if I did it again... but these are nice. The buhsings on the sways bars came with them: suspension techniques. The rest of the bushings are energy suspension.



Please let me know if you hear more on the manifold thing. 10 HP from a manifold 15 HP from water injection and I'll be REALLY close to 500HP for under 20psi boost.... potentially anyway https://www.nopistons.com/forums/pub...#>/biggrin.png

My butt dyno told me that I gained (maybe about 10 HP) on the top end with the FD upper intake manifold. It didn't seem to change the low end.

https://www.nopistons.com/forums/pub...#>/biggrin.png man thats a mighty sensitive butt ACE https://www.nopistons.com/forums/pub...IR#>/smile.png it would be intresting to see an actual dyno of this mod.

I'm usually pretty good, but I never had a chance to dyno the car. So we'll never know.

.84 a/r hotside?



That would explain the 17-19 psi by 3900 rpm statement. I wonder how much more you could make on the top end with a .96 or 1.0 a/r? Isn't this a PT67 or something like that? Do they offer a bigger exhaust a/r?

Yep... I was paying attention on the drive home and did several "pulls"

I'm only running 16psi right now so I can't speak exactly to the 19psi but:



In 5th gear I started at 2500 RPM and floored it. I saw .6bar by 2900 the W/G started to crack at 3200 and by 3500 I was at 16psi, full W/G... so I definately believe 19psi at 3900.



<butchered!>

<added

Further I have not ported my .84 to match the manifold runners... ie my exhaust gasses hit a WALL when they enter the turbo. Matching the flow ports exactly is impossible b/c that would break out of the outside of the turbine housing. So we were thinking that maybe going to a 1.0 although being bigger and generally slowing spool, it could be port matched to the manifold for smoother gas flow which would increase flow and help spool.... so in an idea world, I could get less restriction on the top end and by improving the flow path I could retain the current spool characteristics... who knows how that would really end up though....





>



Does someone want to buy me another turbine housing to find out with?? https://www.nopistons.com/forums/pub...IR#>/bigok.gif



We did a run at 20psi and saw 466HP at 6k RPM (my 467.5 at 19psi was seen just over 7k) so it was headed to make more peak power, but Steve detected some ignition breakup and let off before peak was achieved.



There is certainly more power left in this setup but first I need a bigger fuel pump (the RP one was maxing out) and Steve feel a bit stronger ignition (the Jacobs box on factory coils wasn't popular) unfortunately I'm out of money for a while, so these "experiments" will have to wait :(



-Chris

Great theory https://www.nopistons.com/forums/pub...DIR Sounds like it would work.

Cool Chris. I was impressed when Steve told me the numbers you put down. I have made 470 to the wheels myself when I still had the gt 35/40. Those twin open wastegates were loud! Had to keep covering my ears while trying to change Mike Rizzo's plug wires. My female friend that was hanging out there was like wtf is going on https://www.nopistons.com/forums/pub...IR#>/wacko.png

Thanks... yeah it was a bit loud. It's funny, being on the street it doesn't seem as bad and a few people that have ridden with me didn't really notice it being loud.... but in that warehouse... OUCH, a little bit annoying https://www.nopistons.com/forums/pub...DIR#>/wink.png



I only saw one guy not covering his ears, (the guy with the Grand National) and he was probalby already deaf.

I didn't cover my ears either. One hand by the laptop, the other hand for the remote to turn off the dyno.... It was a fun weekend and I want to see some 10's run in your car!!

Yeah, I had no idea how you could put up with that... I don't think I could concentrate.



I'm gonna need to do something about a cage in my car before I run tens... heck, I think I need something before I can legally run 11's... just gotta figure out exactly what that is https://www.nopistons.com/forums/pub...DIR#>/wink.png

Chris, let's talk about this housing thing, I may be buying a PT67, and I could order it with a larger housing than what I want for my application. Is that a Garrrett that you have? Carl (call me about that Manifold) 707-696-2705

awesome #s man intersesting manifold good idea

Beautifull

Theoretically, couldnt someone make a manifold, maybe similar to an exhaust manifold? Perhaps with a different throttle body?

Do you mean intake manifold? THere are a few people that do it but mostly in Aus. Rotorwerx (I think) has one that was dyno shown to add like 40HP.... of course it really hurt low end and that HP increase was a like 30psi boost.... I was going to get one but they actually talked me out of it saying it wasn't good for a street car.



I would think something good could be made, just a function of figuring out exactly what was needed.... I'd love to try making one though.

Chris,

Contact Rotarygod from RX7club.com forum for info on custom made intake manifolds. He's done a few and has a formula for calculating the plenum size runner lengths, etc. His designs uses a Mustang throttle body but if I did one I'd probably use a Q45 throttle body because they are large, readily available and pretty cheap. It's be nice to do 3D Cad drawing of one and get a model made using an SLA machine. Then make it out of glass filled nylon.