I went up to KD Rotary today. After sorting out why my boost controller wasn't working (wire broke) Dave strapped her to the dyno and started tuning. He did 20 pulls in all. The first bunch involved taking fuel out of the midrange and making sure the top end didn't lean out. They were done at 10 psi, and I made about 320 hp once it was properly tuned. After some time to cool down, it was time to have some fun. Dave turned up the boost to 15 psi, and put down 427.7 hp. It was almost right. Dave tweaked it a little more and on the next run we put down 430.8 hp and 332.2 lb/ft or torque. Boost spiked to about 17 psi initially and then held at 15-15.5 psi. I was very impressed, as I was hoping to make 400. I guess this shows the difference that a big street port can do. This was on Sunoco 94 octane pump gas. Dave said I'm at about the limit of my stock ignition system, and there maybe 4-5 hp to gain with something like a twinpower. Once I get the ignition and a 3 bar map sensor I plan to dyno at 20 psi or more on race gas. Basically I want to hit 500 hp. Overall I am very happy with the turbo. I got it for hundreds less than something else comparable thats out there. It spools very fast, almost like stock twins in my opinion. If you are in the correct gear, there is no lag. I eyed my rpm and boost briefly on my drive home. I remember seeing 15 psi around 3500 rpm or so In 4th gear when I got on it from maybe a 65-70 mph roll. I fooled around a bit on the highway, playing with the boost, and turned down the balance a bit to reduce spiking. I put the car away for the rest of the night because it started to drizzle. Hopefully it will be nicer tomorrow so I can do more testing.

 

Here's a list of my related mods:

KDR monster street port (told him the biggest he can go)
3mm seals, silicone coolant seals, reliability mods
Garret GT 35/40 1.06 a/r
Apexi Power FC
Greddy Profec B
K2RD fuel rail with 1600cc secondaries
SX fpr
Cosmo pump
Greddy 2 row front mount
Mazdacomp radiator
probably forgetting something else
Greddy elbow
SR resonated midpipe
Greddy SP catback

 

Congrats, very good numbers. Those are damn good IMO. Especially like the 430rwhp number...

 

Here's the dyno sheet

 

NICE!

Got a boner now...

 

SWEET!!!!!!!! 430hp @15psi

 

who carries that turbo kit? or do you have to piece that together yourself? very nice numbers.

 

Awesome numbers man!

 

congrats you **** .. i need to go back up to dave for another dyno session. i want to make the 400rwhp on my stock port motor .. damn leaky wastegate ...

 

RX7 Store sells GT35/40 kits.

http://66.216.67.51/product.asp?0=220&1=340&3=612

K

 

kit, RPM in New Zealand or A-Spec in the states.

 

congrats

 

as stated before..great #'s 430rwhp at 15psi is sweet..

glad to see another FD over 400rwhp...

we need more 400rwhp FD's!

 

Note to self: upgrade turbo

 

Very impressuve, go for broke man

 

cool

i cant wait to get mine back together and broken in
hopefully i can hit those numbers @ 15 psi....i should going from others' experiences.

-Nic

 

wow!

very well done...thanks for posting the info...its
appreciated...

how agressive is the timing? How agressive are the AFR's?

I agree..the more 400hp plus fds the better.



j

 

Hey Steve, thanks for replacing the wastegate for me. I'll mail the bad one back tomorrow. My a/f ratios were in the mid to low 11's. I don't remember what the timing was. I asked Dave to keep it safe. I'll look over them during the weekend.

 

Im impressed

 

excellent!! you just convinced me to buy that turbo!! Great numbers!!

 

Congrats to you I'm glad to see it's doing what it's supposed to.

Hows the new wastgate working out?

I'm glad to see the#'s. I've been saying they would be 400-430@15lbs depending on porting it's also very responsive just wait till you get over 17lbs thats were the sweet spot is and it will start to make real good #'s


Turbogarret we carry the kits in the US and handle all warranty and tech support if needed if you have any Q's you can call the shop 630.543.8890

Thanks,Sean

 

i hope that when i get an fd, it grows up to be like yours

 

New wastegate works great, though I had to pull out the middle spring to get 10 psi. With the 3 springs in I was overboosting to 16 psi before I let off. I'll mail the faulty one back to you tomorrow. Thanks again, you saved me a ton of downtime.

 

No problem, have fun. I hate downtime myself if you need anything else just call.

Thanks,Sean

 

hehehehe... just wait.