I wanted to share some recent dyno numbers of a car that was built in my shop a while ago. Mods are the following:

IRP Stage 3 aggressive street ported and race clearance motor will all Mazda oem seals, springs, gaskets, and bearings.

BNR Stage 3 turbos run sequentially.

Custom V mount.

Full Function Engineering FD stepup kit with ID2000 injectors.

Power FC

AEM methanol injection.

HKS Twinpower.

3" downpipe, RX-7 Store midpipe, Apexi GT catback.

During our dyno day the other week the car put down 413 corrected wheel hp @ 16lbs on its highest run on our Mustang Dyno. Next up we are going to tune out the dip during transition and turn up the boost. Might even go for the sequential record. Please note the O2 sensor fell out the exhaust hence the lost AFR near the top of the dyno sheet.

 

saw this on FB, good stuff.

 

very good

 

Great numbers and even better power band. Once you get that dip corrected it should pull like a freight train!

 

Nice numbers!

 

Thanks for sharing. Looking forward to seeing a new sequential turbo record!

 

Did you tune for the methanol injection?

 

Yes. In order to extract the maximum benefits of the methanol and for the most safety the car should be tuned with it. Methanol also acts as a fuel so it will skew the afr if not compensated for.

 

Looks like Ihor beat me to this , hey guys this is my car - check out my dyno thread I just created for more details:

https://www.rx7club.com/time-slips-d.../#post12128612

 

Anyway you can do a pull from 2k RPM and post the dyno graph? I'm really interested in seeing what power looks like at the lower RPM with this setup, I also understand that not much power is made that low especially on this setup.

 

I just had my car tune from lucky 7.Here is my mod street port motor BNR stage 3 running seq, hks twin power,aem water injector with 500cc nozzle ,550cc primeary injector ,full function secondary fuel rail with 1700cc injector ,greddy smic,supra fuel pump,SS Hi-Flow Catalytic ,racing beat catback exhaust all 9s spark plug and rewire fuel pump, boost @ 1.04 bar i think is like 15 psi and my HP power is so depressing it only make 310 wheel HP .

 

^ What dyno?

 

Hmmm 310whp seems really low for the mods you have.

 

Peak numbers are good, but the transition is far too extreme, dropping to around 8psi. The boost seems stable after transition, so the power & torque fluctuations are indicating an ignition issue or way too much fuel and/or water/meth being injected.

Lexxs- the RB catback is very restrictive, mate that to a high flow cat for more restriction and the power comes down a lot.

 

Can just a catback really do that? Comparing his mod to the 'dyno comparison each part added' build it seems so low on power. I would think he would have at least matched power wise, since he has bigger secondaries and BNR stage 3 turbos.

 

Chris I agree. The car was street tuned previously. Need to get some more dyno time on it. We are going to work on the transition by adjusting the precontrol rod and upping the transition point. Each car is different so the BNR turbos need some tweaking to get the most out of them. No breakup. For simplicity during the dyno day we were using roller speed for rpm. The spark plug wire clamp is more accurate. Ive seen modified cars pick up 20 hp by ditching a Racing Beat catback. Its great for noise, not for power.

 

Yes on the catback. Additionally we have no idea what the tune looks like (AFR, timing, etc). If I had a dyno sheet with data, I would be able to make a more educated assessment.

 

I ask the tuner why the map looks like that and he say he lock it so i can not accident delete the map so that is why i'm seeing it like that on the commander.Anyway what do you guy recommend i should do to gets more HP. Do i have to get a retune if i change to a less restricted cat?

 

There is no information to work with there. Reality is, that just prevents you from changing anything or seeing what the settings are, it can however easily be deleted and reset to the base map.

Basically any major air flow mods and the car should at least have the tune verified.

 

Will i be able to see the map if i hock up with datalogit?

 

yes, might consider starting your own thread and posting up the map

 

Spent sometine with our in house tuner, John Renna, and worked out the transition. Here are before and after logs. Transition before.
Transition after.

 

Looking good, must be a fun car to drive .

 

Turned it up to 1.36 bar. Going to dyno it again soon.

 

Yes the car is an absolute blast to drive esp. at the 1.36 (as seen on PFC) high boost setting!

John Renna tuned the car over the weekend for a high boost of 1.36 and the car flies! With the transition smoothed out you can barely feel it!

Planning to get it on the Dyno with Ihor at IRP and crush this BNR Stage 3 Sequential record (apparently 429 RWHP on a DynoJet which of that's correct I have already beat it based on the Mustang to DynoJet correction).

Regardless I'm going to see what the twin beast puts down at 1.36!