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- 92 & 16 Meyatas
bumpin_p5 said:
whats your AF's at 7 psi?
Turboed MP5's rule
- Thread starter Matthew1785
- Start date
whats your AF's at 7 psi?
Let me get my vacuum block installed and get rid of the vacuum leaks and I will get back with you on that. By getting rid of the leaks and having a more solid line of pressure throughout the vacuum system, I should have a better a/f ratio at 7psi.bazooka joe said:
- :
- 92 & 16 Meyatas
bumpin_p5 said:
sure, at 5psi i pulling like 12.4
- :
- 92 & 16 Meyatas
aMaff said:
haha...what was it?
- :
- 92 & 16 Meyatas
aMaff said:
(2thumbs)
Matthew1785
Member
hey since were on the subject of vac leaks.. I it possible to run at 20 inches of vac and still have a vac leak?
the reason I'm asking it because whenever I go into boost my boost gauge starts to flutter after the 0 inches
I feel like I'm building boost and I know I'm boosting but is there any way to get a steady reading of the boost gauge and stop the fluttering?
could the vac line from the gauge to the T be too long? I noticed there used to be a small kink on that vac running from the boost gauge to the T but we unkinked it
any ideas? it would be nice to see a steady reading for once.
I have check all the IC pipes everything is as tight as a whistle.
the reason I'm asking it because whenever I go into boost my boost gauge starts to flutter after the 0 inches
I feel like I'm building boost and I know I'm boosting but is there any way to get a steady reading of the boost gauge and stop the fluttering?
could the vac line from the gauge to the T be too long? I noticed there used to be a small kink on that vac running from the boost gauge to the T but we unkinked it
any ideas? it would be nice to see a steady reading for once.
I have check all the IC pipes everything is as tight as a whistle.
Matthew1785
Member
mechanical
I noticed some where in this thread or another, that you said something about a rough idle and now you are complaining of this symptom of a fluctuating boost gauge. I would say that you have a vacuum leak somewhere. I have a vacuum leak but it only leaks sometimes. Sometimes I get a perfect idle and no loss of vacuum and sometimes I get a bad idle. You could also be losing boost through a vacuum line. Kinda hard to tell while you are boosting, but I would get the ends of the vacuum lines clamped if I were you. just an idea.Matthew1785 said:
I put the vacuum block in today and it got rid of all the leaks. I took her out and pushed her good. It's kinda hard to tell what afr I am at at 7psi. The begi is designed to go up to 7psi, but it kinda cuts out. When I stomp on it, the ratio is good, then around 5psi I am at 11.9 at 6psi around 12.1 and at 7psi it is around 12.8 and pushes up the longer I hold it. I usually let off the gas when it hits 14.0. I really need to see if the split second afc will work for the automatic. That would be a great investment.bazooka joe said:
on a side note, I boosted in first gear for the first time yesterday. I wasnt even trying to. I just kinda got on it making a turn to avoid high speed traffic and man, it starting breaking loose, I tried to hold it, but there was way to much torque steer. lol.
Matthew1785
Member
how much does a vaccum block run? where can I pick one up. I assume its much better then a plastic T
I'm really surprised you don't boost in first, I do at 1 PSI shift then get on it on 2nd man that pull is exciting. when I get these leaks addressed and a new wastegate installed I will up the boost to 6 PSI and leave it.
I'm really surprised you don't boost in first, I do at 1 PSI shift then get on it on 2nd man that pull is exciting. when I get these leaks addressed and a new wastegate installed I will up the boost to 6 PSI and leave it.
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- 92 & 16 Meyatas
boosting in first gear for me is scary...the tourqe steer is mad!! the wheels just break loose as well and that up shift to 2nd...i don't want my tranny in pieces just yet!! prob get the valve bodies this spring/summer...that will give me some piece of mind!!
1 1Matthew1785 said:
Each 5469K131
Aluminum Distribution Manifold 5 Outlets, 1/4" NPT Inlet X 1/8" NPT Outlet
$14.60 $14.60 Monday morning
2 1
Pack 5346K18
Brass Hose Fitting Barb X Male Pipe for 3/8" Hose ID, 1/4" Pipe, Packs of 10
$8.41 $8.41 Monday morning
3 1
Pack 5346K11
Brass Hose Fitting Barb X Male Pipe for 3/16" Hose ID, 1/8" Pipe, Packs of 10
$7.06 $7.06 Monday morning
Merchandise $30.07
1 1
Pack 5346K61
Brass Hose Fitting Barb X Male Pipe for 1/8" Hose ID, 1/8" Pipe, Packs of 10
$7.57 $7.57 Monday morning
Merchandise $7.57
Shipping $4.00
Your credit card will be charged $11.57
That was a total of 41.57 for the vacuum block with 5 ports and all the fittings I need. came from
http://www.mcmaster.com/
This company is in Atlanta, GA. I ordered Sunday night(late) and the parts were here on Tuesday.
bumpin_p5 said:
It appears they have a couple places... including one in Chicago. I usually get stuff 2 days after I order it, so the equivalent of next-day air for free
Here is what my block looks like: http://www.khaosman.com/gallery/turbo1/DSC09283
Matthew1785
Member
intresting.. the plastic TTT looks exactly like that same discription well except mine is plastic..
By clamping them down. with what the lines are so small what do you suggest I clamp it down with? zip tie?
The reason I am questioning the fluttering boost gauge is because we replaced the vac lines twice now and the gauge still flutters.
Now I do have leaky wastegate which is getting replaced soon but it could be why my boost gauge is fluttering.
but as for my erratic idle that was fixed, was caused by bad wiring from the 02 clamp and it wasn't tuned well.
once the wastegate gets replaced that should eliminate one of the issues I am having. if the gauge is still fluttering after that then I must have a leak somewhere else.
but what gets me is that I'm sitting at 20-18 inches of vac in park and in idle
By clamping them down. with what the lines are so small what do you suggest I clamp it down with? zip tie?
The reason I am questioning the fluttering boost gauge is because we replaced the vac lines twice now and the gauge still flutters.
Now I do have leaky wastegate which is getting replaced soon but it could be why my boost gauge is fluttering.
but as for my erratic idle that was fixed, was caused by bad wiring from the 02 clamp and it wasn't tuned well.
once the wastegate gets replaced that should eliminate one of the issues I am having. if the gauge is still fluttering after that then I must have a leak somewhere else.
but what gets me is that I'm sitting at 20-18 inches of vac in park and in idle
