LS 408 Vega 88mm Street tuning with video
10-27-2014, 03:49 PM
#1
LS 408 Vega 88mm Street tuning with video I have been taking the car out about once or twice a week to start dialing up the boost and doing some street tuning. My son went with me and ran the laptop for datalogs. He also recorded a few small pulls on his phone.
We are at 4500 ft elevation so we are at a disadvantage from you sea level guys. I am at about 14 lbs here with an AFR of 11.2 and about 12 degrees of timing. I just got the meth injection kit installed so I was spraying a little methanol also. It did not not have any knock but I think I sprayed too much meth too early as it stumbled a little on the first pull. I only did a short pull as the road is not the most isolated.
We are at 4500 ft elevation so we are at a disadvantage from you sea level guys. I am at about 14 lbs here with an AFR of 11.2 and about 12 degrees of timing. I just got the meth injection kit installed so I was spraying a little methanol also. It did not not have any knock but I think I sprayed too much meth too early as it stumbled a little on the first pull. I only did a short pull as the road is not the most isolated.
Last edited by meatheadgn; 11-24-2014 at 02:24 PM. Reason: added new link as son's YouTube account was hacked
10-27-2014, 04:41 PM
#4
<<<@!1!@>>>
Here is a walk around vid of the car when I drove into my driveway from a few months ago. I shows the elbow that I used on the Victor Jr. intake and the 102 cable throttle body.
Here is a walk around vid of the car when I drove into my driveway from a few months ago. I shows the elbow that I used on the Victor Jr. intake and the 102 cable throttle body.
Last edited by meatheadgn; 11-24-2014 at 02:25 PM. Reason: added new link as son's YouTube account was hacked.
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10-28-2014, 03:41 PM
#8
Thanks for the comments. The car has been pretty fun and with the 3.73 gears, tall tires and the Glide it is actually really easy to drive on the street. I am anxious to get the boost up a few more pounds and start the fine tuning to see how it runs.
The forum has been a big help in tuning this.
The forum has been a big help in tuning this.
10-29-2014, 03:21 PM
#9
Looking good Don! Glad to see you're getting it dialed in more and more!
Set your methanol to not come on until at least 6-7psi and have it ramp to full 100% around 10-12psi.
This should eliminate any stumble you may have occurred at lower injection settings.
Set your methanol to not come on until at least 6-7psi and have it ramp to full 100% around 10-12psi.
This should eliminate any stumble you may have occurred at lower injection settings.
10-31-2014, 10:55 AM
#12
You need to get a new camera, camera man, or both. lol
Yeah the only thing that sucks about that, is then you feed your engine upside down air, and upside-down air has a different stoichiometric ratio for gasoline then regular air, so you run the risk of your car running lean.
Yeah the only thing that sucks about that, is then you feed your engine upside down air, and upside-down air has a different stoichiometric ratio for gasoline then regular air, so you run the risk of your car running lean.
Last edited by 93camaro_zzz; 10-31-2014 at 11:01 AM.
11-03-2014, 02:46 PM
#13
I have the methanol come on as Martin suggested and it seems pretty smooth. It did not have any knock and the AFR was at 11.2 with about 12 degrees of timing.
I think our nice fall weather has come to a close so I will get it on the dyno early spring and get it dialed in better.
11-03-2014, 05:09 PM
#14
No more stumble or hesitating?
If so, that's good! She's happy now!
I did that once on my old turbo car except it did it on the transbrake. It started popping as it was mis-firing, but I mistook it for my two step! Haha! I learned to be a bit more conservative with where I set my "on" point after that.
If so, that's good! She's happy now!
I did that once on my old turbo car except it did it on the transbrake. It started popping as it was mis-firing, but I mistook it for my two step! Haha! I learned to be a bit more conservative with where I set my "on" point after that.
11-04-2014, 09:15 AM
#15
No more stumble or hesitating?
If so, that's good! She's happy now!
I did that once on my old turbo car except it did it on the transbrake. It started popping as it was mis-firing, but I mistook it for my two step! Haha! I learned to be a bit more conservative with where I set my "on" point after that.
If so, that's good! She's happy now!
I did that once on my old turbo car except it did it on the transbrake. It started popping as it was mis-firing, but I mistook it for my two step! Haha! I learned to be a bit more conservative with where I set my "on" point after that.
Thanks for your guidance as the car runs pretty strong now especially when you get it into Drive and it starts to get some load on it.
