downpipe, intake, tune.
I just got off the dyno so Matt’s follow up graph is a bit late.
I had this 09 WRX up to 29X torque, but it did want to take the timing required on a regular basis due to the TMIC still being real small and soaking easily so this was the final tune as it was left so the car runs nice and consistently. I went through the gears and did a road course torture test to be sure since this owner tracks her car.
And here’s a customer built DSM I just tuned with DSMLink:
I applaud Mike for the tune, intake, and downpipe on my 08 WRX. (I am Matt B). The car is overall better! It’s smoother, 1 to 2 mpg boost in the city, and when it needs to go, it goes… HARD.
Awesome Matt. Thanks for the feedback!
I’m excited for the 23rd ! better not snow
You deserve it Mike. I never expected such great results!
Dyno pull video from the GS-T I posted a few posts up:
Dyno pull video of the following 1JZ swapped 240sx:
I couldn’t help myself…
A flat torque road course tune for a basic 04 STI setup:
Will’s Evo now with more lag and a little less power since we added an extra inline muffler:
lol @ 1JZ
How come u added a muffler to that evo?
it was pretty loud. and he wanted a more streetable car…obviously since he got a tune with more lag.
damn i love the sound of 1j’s
hopefully over the winter i can get my shit 2gether, i need 400hp in my life!
Deebo: The Evo is a normal daily driver that happens to have a lot of power. He wanted it quieter so we added the extra muffler in line and left the Magnaflow at the back in place. The car is significantly nicer to drive now.
It’s down around 35-40 whp on our dyno from the tune that made 674 whp on a Dynojet so it’s still plenty fast for the customer. I went through 2nd and 3rd on the road test before he picked it up and it still spins like it used to.
Well i figured the purpose of the muffler was because it was loud lol… kind of a stupid question now that i think about it
thats lame :meh:
Suspicions of downpipe confirmed here. This car is still catted and it spooled quicker and outpowered the above one until 4800…and did it on 91 octane. After 4800 they just about mirror each other despite this one being on 91 octane.
I still haven’t had a stock Evo 8 or 9 on the dyno. They’ve all been modded so I’m not sure what they baseline at on this dyno. I know an Evo X with hard IC pipe made 204-205 whp.
This was meant to be a retune for new cams and an o2 housing on an Evo 8. Unfortunately those parts ended up making the exact same HP/TQ curves as the car made before the owner put those parts on. I talked to the cam manufacturer and they said this is typical for a stock turbo setup because the stock cams weren’t the weakest link in the system. I guessed that the customer’s 3" high flow race cat was the weakest link and offered to test that for him.
This graph shows the car with the 3" high flow race cat vs. a test pipe. The only other change I made was adjusting the boost controller so the boost was as close as possible for comparison. The boost graphs are in pink. You can see that I got it so the boost was the same for the runs in the low and mid range, but at the very top end, boost on the test pipe pull was lower despite the large gain in HP the test pipe gave on the top end (20 WHP).
Spoolup was better on the test pipe run and low/mid range torque improved very noticeably too.
We inspected the race cat and it did not appear damaged in any way. It also had low miles on it so this wasn’t a damaged/plugged cat issue. The cat was a flow restriction as is. This testing was all done on 93 octane. Perhaps some day we’ll see what the cams can offer at a higher boost level now that the cat is out.
What cams were they?
i think they were FP4R cams
Basically a 272 combo, the revised version of the FP2’s if you aren’t familiar with them.
Yessir FP 4Rs. I’m sure they’ll work great in the future as the car gets modded further.