Sounds like to me Dynojet ftw lol
StreetSpeed’s DD 500+ MS6 Build
- Thread starter StreetSpeed6
- Start date
- Watchers 39
Well I finally got some new stuff happening with the speed. Got a new headlight, temporarily fixed the grill that was broken, replaced my high pressure fuel rail, and got some new wheels. Wheels are extreme offset though but got a great deal on them!
Enkie RPF1's 17x9.5 +18 rocking some Ferelli 245/45/17's which don't fit when you're lowered lol
A buddy talked me into cutting my rear fenders which seemed drastic but it honestly seems to have worked out mostly and the fitment is great imo. Too much poke but you'll have that with this offset and it kind of gives the car a wide mean look I feel like! It took two attempts on the first side that I cut but I think overall it worked out great!
Car is a ROCKETSHIP pushing 34psi give or take and had a blast driving it and letting some buddies do a ride-a-long.
Enkie RPF1's 17x9.5 +18 rocking some Ferelli 245/45/17's which don't fit when you're lowered lol
A buddy talked me into cutting my rear fenders which seemed drastic but it honestly seems to have worked out mostly and the fitment is great imo. Too much poke but you'll have that with this offset and it kind of gives the car a wide mean look I feel like! It took two attempts on the first side that I cut but I think overall it worked out great!
Car is a ROCKETSHIP pushing 34psi give or take and had a blast driving it and letting some buddies do a ride-a-long.
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Slightly off topic but some will know I had a garage that a tree fell on. Garage is coming along nicely and went from a 26x26 to and 30x50 with a 12x50 lean-to off one side. Getting a car lift in it and it should be a super amazing upgrade from the previous garage! I'll post when it is fully finished how it turns out.
That's amazing
I haven't made a post for a bit but the garage has been doing well and I am hoping to have some heat and ac in it this upcoming summer. It's absolutely frigid to do anything in there at the moment.
The Mazdaspeed 6 got some new RPF1's that I probably shouldn't have made fit but I did lol They're 17x9 and I think something like +15 I got a great deal on them and decided I liked the wide look somewhat. It is definitely too much offset for having it lowered but looks wide as could be from behind!
The Mazdaspeed 6 got some new RPF1's that I probably shouldn't have made fit but I did lol They're 17x9 and I think something like +15 I got a great deal on them and decided I liked the wide look somewhat. It is definitely too much offset for having it lowered but looks wide as could be from behind!
Awesome! I'm super jealous of the shop and lift.
We are getting closer to the possibility of both, but I still bet a nother couple years.
For me it was just because a tree fell on my old one haha It would take me another 10 years to have this if it wasn't for that. You'll get it man I am sure!
As for my speed 6 I am currently having an issue while driving where it starts to hiccup and the fuel pressure jumps for normal 1200-1500psi cruising or whatever down to really low numbers. I have a used fuel rail sensor in as my old one went bad. It's a pain to get to but I have a feeling I am needing to get another again or something. I installed a brand new hpfp because I thought it could've been the culrpit and was super old anyway but it didn't fix the issue. It only happens once I have driven the car a while and is fully warmed up though. Also I've noticed for some reason after this started that my idle pressure isn't 450-500 anymore and is now saying it is 700-850. Think its the sensor?
@Enki @Rokusek @phate @JohnnyTightlips @Easter Bunny @Matt@DamondMotorsports
Calling for some help on this situation as I am still experiencing it. Car stumbles hard after being driven for 20-30 minutes and is fully warmed up a while. Hpfp pressures seem to randomly drop to 500 from 1500. Brand new HPFP installed and didn't fix it along with new bosch fuel rail pressure sensor. Running a returnless pi setup with AEM 340 itfp. Ran feed through passenger side of pi rail first and then out to the hpfp hoping it wouldn't deadhead as badly. Please let me know what else you think this could be guys I need some help here.
I'll pull the itfp and then see if maybe the sock is stopped up or something. Anything else to check while I'm in there? The datalogs I have weren't recording hpfp voltage and only actual pressure so I am going to try and get some new logs this evening of it doing it but with the voltage logged as well.
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Me and JT thought maybe the signal was being dropped or something during those dips which would maybe point to the sensor instead of fueling the way I understand it. I'll post the logs.
Here are the latest logs I have taken. The driving log will probably be the most obvious but also the idle logs I am sure too.
phate
Motorhead
I second all of this.
Crazycanadian
Greenie Member
I don't see much of an issue with your high pressure fuel going on in these logs. But I do see an issue with your intake valve advance.. It's bouncing all over the place. These are the 2 idle logs. In one of them it's bouncing 9 deg.. In the other it's 28 deg. If this isn't a mechanical issue, it's possible you've got a signal interference issue/wiring problem.... It's possible a wiring or signal issue could be showing up in other log on the high pressure fuel signal... 
I appreciate you bringing this up. I really hope this isn't a mechanical issue. I swear I have done the timing on that thing 3 times and this time has went much better but that would be very frustrating. Electrical problems are super frustrating too though but still lol
The blip in valve advance could be happening when the motor bogs down as well to keep it from dying idk. A lot can happen when an engine is dipping as fast as mine while this odd thing is happening. Tuning has shown typical intake valve advancement from what I understand so I feel like it could be a reaction from the motor to try to help it during the issue it is experiencing
Crazycanadian
Greenie Member
There's more data we could use to try and narrow down this problem. Some of it I don't remember being available through a COBB access port. Some of it is availble with Versatuner (their data logging rates are reaaally slow), but ForScan has it all and with the fastest data logging rates..
You'll want to log engine rpm. accel pedal position. boost (with Versa tuner or ForScan it'll be Manifold Absolute pressure). Load. MAF. VVT (actual, desired and solenoid command). HPFP actual and desired. We don't need voltage reading with this, not at this time.. The data we are reading is a direct result of the Voltage readings., so we are just doubling up data..
In this data it looks like the ECU is doing things to stabilize idle.. Is it a VVT issue causing it, or is it something else causing VVT to bounce..
In this MAF log your VVT jumps to 42 and back down to 35 and up again.. Stock VVT tuning would be 30 deg and carry out longer, but 42-35 isn't out of the range it could be tuned too.. Having it jump around in this log could just be the area of the VVT map it's in and how it's being commanded. Whats really interesting is that load and map values rise and fall for a short period while RPM is steadly climbing and APP is steady... It happens in conjunction with VVT jumping around.. This might just need tuning to smooth out..
Without having a VVT command pid, and/or Solenoid command pid it's hard to know if these blips and some of the things I am pointing out are supposed to be there or not..
A HPFP command pid will tell you if the actual pressure is following command or not. If it's following command, then you move on from trying to diagnose it being bad..
You'll want to log engine rpm. accel pedal position. boost (with Versa tuner or ForScan it'll be Manifold Absolute pressure). Load. MAF. VVT (actual, desired and solenoid command). HPFP actual and desired. We don't need voltage reading with this, not at this time.. The data we are reading is a direct result of the Voltage readings., so we are just doubling up data..
In this data it looks like the ECU is doing things to stabilize idle.. Is it a VVT issue causing it, or is it something else causing VVT to bounce..
In this MAF log your VVT jumps to 42 and back down to 35 and up again.. Stock VVT tuning would be 30 deg and carry out longer, but 42-35 isn't out of the range it could be tuned too.. Having it jump around in this log could just be the area of the VVT map it's in and how it's being commanded. Whats really interesting is that load and map values rise and fall for a short period while RPM is steadly climbing and APP is steady... It happens in conjunction with VVT jumping around.. This might just need tuning to smooth out..
Without having a VVT command pid, and/or Solenoid command pid it's hard to know if these blips and some of the things I am pointing out are supposed to be there or not..
A HPFP command pid will tell you if the actual pressure is following command or not. If it's following command, then you move on from trying to diagnose it being bad..
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First off wow you seem to be full of diagnosis knowledge so thanks lol Secondly, that's what we were trying to do with the voltage. So using desired vs actual hpfp pressures could possibly be used or that isn't enough?
