Stapl3
15+ Year Contributor
- 1,828
- 400
- Oct 27, 2004
-
MI,
Michigan
I'm surrounded by 'e85', so before switching over to that I want to make sure I'm on the right path.
Started with the stock evo timing table and worked from there. All was good until I started shifting during pulls. This caused tons of knock the second I got into the next gear. You can see all the timing pulled in my table because of this. Is this normal or does it suggest a mechanical issue? It did cure my knock but it seems odd to do such drastic adjustments to the table. The more I look around for logs to compare to, the more I realize people are reluctant to share their DA's. Rightfully so.
The setup is pretty laggy too. The cyclone IM locked to favor the upper RPMs isn't helping. I think the hotside is probably the biggest contributor to it. Turbonetics 60-1 with a ported bullseye mitsu housing [effing brick!]. The manifold is a hogged out Evo III GT. The exit of the manifold was about 8.5cm and the turbine is port matched to this. It's gotta be the biggest you can get while keeping it stock appearing.
I'm targeting 5750 for my boostest. The mafcomp is pretty close to done. I'm to the point now of doing a few pulls and comparing them before doing minor adjustments. That 1700hz blip needs to be adjusted next time out for sure.
93 octane only
BM 1250s
FIC Easytune
Virgin 399 MAF [very odd shaped intake pipe]
60-1
8.3:1
272s
A/W IC
Cyclone Manifold locked to favor upper RPM.
Lightly ported 1g head
2ndand3rd is a a few days older than 2ndgearpull. I pulled timing where it knocks in second and did some adjustments in mafcomp. Otherwise not much different.
Any thoughts or ideas is greatly appreciated.
Started with the stock evo timing table and worked from there. All was good until I started shifting during pulls. This caused tons of knock the second I got into the next gear. You can see all the timing pulled in my table because of this. Is this normal or does it suggest a mechanical issue? It did cure my knock but it seems odd to do such drastic adjustments to the table. The more I look around for logs to compare to, the more I realize people are reluctant to share their DA's. Rightfully so.
The setup is pretty laggy too. The cyclone IM locked to favor the upper RPMs isn't helping. I think the hotside is probably the biggest contributor to it. Turbonetics 60-1 with a ported bullseye mitsu housing [effing brick!]. The manifold is a hogged out Evo III GT. The exit of the manifold was about 8.5cm and the turbine is port matched to this. It's gotta be the biggest you can get while keeping it stock appearing.
I'm targeting 5750 for my boostest. The mafcomp is pretty close to done. I'm to the point now of doing a few pulls and comparing them before doing minor adjustments. That 1700hz blip needs to be adjusted next time out for sure.
93 octane only
BM 1250s
FIC Easytune
Virgin 399 MAF [very odd shaped intake pipe]
60-1
8.3:1
272s
A/W IC
Cyclone Manifold locked to favor upper RPM.
Lightly ported 1g head
2ndand3rd is a a few days older than 2ndgearpull. I pulled timing where it knocks in second and did some adjustments in mafcomp. Otherwise not much different.
Any thoughts or ideas is greatly appreciated.