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Mamba
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Post by Mamba »

well she runs. i switched to pre turbo and i have finnaly been able to keep the car running long enough to properlly set timming, only thing is the car runs supppper lean? 17-18- --- vac is at 10-11
esahuque
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Post by esahuque »

Mamba wrote:well she runs. i switched to pre turbo and i have finnaly been able to keep the car running long enough to properlly set timming, only thing is the car runs supppper lean? 17-18- --- vac is at 10-11
Well you have a boost leak my friend. (if you haven't figured that one out yet)

Has anyone tried 15 min. plastic weld from AZ to seal up their maf with I took the square out and cleaned all the gasket of it. lightly sanded the edges for a rough surface, then i resealed it with that stuff and coated it thick over the top and seam and it hasn't leaked yet. I had problems trying to fine something that would stick to the ABS plastic.
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10toesdown
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Post by 10toesdown »

Well this might sound like a stupid question, but since its blow-thru does the flow arrow on the maf point towards the intake mani or towards front mount?
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Jordan Gladman
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Post by Jordan Gladman »

The arrow points in the direction of the airflow, always towards the throttle body/intake manifold.
c_mancuyas8
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Post by c_mancuyas8 »

Back from the dead! Glad I found this after forever of looking! Im gonna do this this weekend I have the same prob as everyone else with enthalpy running a bit to rich. Boost leak test and then its on!
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supakat
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Post by supakat »

How are you running the MAF and BOV?

My MAF is on the straight pipe before the TB. You see two t-bolt clamps. That is the MAF.

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c_mancuyas8
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Post by c_mancuyas8 »

^ Nice! I want to do this I just ordered the couplers today. I think this will fix the rest of my issues. Right now mine is in the turbo intake.
exnihilos
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Post by exnihilos »

what are you guys using to keep this maf from leaking? ive tried the window stuff. works for a few then i hammer on it and its back to running rich. i currently have jb weld on it and yeah it worked for a while then now its back to idling like **** and running really rich underboost. the jb weld doesnt really stick that weld. jb weld is ****.
c_mancuyas8
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Post by c_mancuyas8 »

try using the window weld few people using that. Mine doesnt currently have anything on it. Im only on 8 psi though
exnihilos
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Post by exnihilos »

ive tried some adhesive from autozone, cant think of the name but its a tube inside a box, theresweither black or yellow. it was still soft when it dried.. where do they sell window weld? and is that the brand name of it?
exnihilos
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Post by exnihilos »

even at 8 psi i blew off the top on my maf.
c_mancuyas8
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Post by c_mancuyas8 »

Im not sure if thats the exact name lol

I dont know how much you searched before asking but this should get you fixed up

viewtopic.php?t=54478&sid=66d8f150d41e5 ... c66658ba44
exnihilos
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Post by exnihilos »

ive searched a lot. i blew it at 8psi twice and then im at 16psi now and its leaking past jb weld. i guess ill take mine apart and seal o ring too.
c_mancuyas8
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Post by c_mancuyas8 »

do you know how to plastic weld? I would guess that would be the best fix
exnihilos
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Post by exnihilos »

never done it but i got soldering iron lol. ill do some magic with that. i dont know... i might build my own housing with exhaust tubing, i dont got a setup for aluminum welding :( thanks for the help bro.
c_mancuyas8
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Post by c_mancuyas8 »

no problem good luck
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supakat
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Post by supakat »

Check out my solution. Middle of page. Holds 20psi fine and actually held 50psi for about 10 seconds by mistake.

viewtopic.php?t=49585&postdays=0&postor ... &start=360
12.96 @ 116.36 - 2.1 60ft - 11/2011
13.1 @ 114 - 2.3 60ft - 8/2012
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exnihilos
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Post by exnihilos »

yeah i sanded and covered the whole top with jb weld. it seems to be holding on the side but not the top i decided to cover the entire top and more to the side.

one thing though... my vacuum is normal 20-22hgin but im running rich at idle. 13afr
and under boost, its 10. before it was good, i dont know what happened...

ill check in after i reinstall everything.
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supakat
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Post by supakat »

I used plastic epoxy that can hold up to 3000psi. JB weld does not want to hold onto the plastic.
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exnihilos
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Post by exnihilos »

ok ill try that next . i just got done coating everything. idle afr are back to normal. have to wait for it to fully cure so i can womp on it.

any one have problems with warm-up idle? it idles around 1500 and 20-22hgin of vacuum. then every couple second or so it drops idle below 1k and the vacuum reads 15hgin then it shoots back up to 1500.

onces warmed up, its does it but less severe. like from 800 to 600 every several seconds.
like it looses its rhythm. it was really smooth when it was na.
Crack240
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running fine for 6 months not daily also without tune

Post by Crack240 »

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ze12o
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Post by ze12o »

bump from the dead. Do we need to take the mesh off the maf? Also I'm on a tuned ecu that runs great. When I switched to blow thru, it leaned out 16-17 @idle. Is it safe to correct this with a safc?
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casman86
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Post by casman86 »

I think idling that lean after getting up to full temperature in the summer is normal. Somebody correct me if I'm wrong. Out of curiosity, how much did it change the afr under boost before/after?
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ze12o
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Post by ze12o »

Use to idle at 14-15 and switched to 16-17. Never boosted it. Wouldn't of been smart to boost it when it was that lean.
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Super Coupe
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Post by Super Coupe »

Mine Enthalpy tune idled that lean when it got to temp. Draw through setup 850cc injectors.


Car ran fine 10/20/30 psi.
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ze12o
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Post by ze12o »

The car use to drop to 10 for a second when blimping the throttle then run high 11s when in boost. I drove around the block with the blow thru and it barely drops past 13
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sik_z33
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Post by sik_z33 »

I ran blow through after reading posts on here on my R.S. enthalpy tune and things just didn't jive. On the dyno I made 211 whp at 7psi running PIG rich. I switched to draw through and with everything left the same the butt dyno is reading a minimum 20-30 hp gain. Just an fyi for mail-order tune users. For those with real ecu's blow through is the way to go still.
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Ikera
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Post by Ikera »

Seems like most of you are not using the stock MAF, is it because of it's MAX power limitation or it's flow design 3" inlet 2.5" outlet?

I've been trying to get N60 MAF to work in blow thru for a while now, seriously thinking about attempting to install the stock MAF into a blow thru setup instead
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supakat
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Post by supakat »

Ikera wrote:Seems like most of you are not using the stock MAF, is it because of it's MAX power limitation or it's flow design 3" inlet 2.5" outlet?

I've been trying to get N60 MAF to work in blow thru for a while now, seriously thinking about attempting to install the stock MAF into a blow thru setup instead
Max power. What is happening when you put blow through? Also, where is the BOV positioned?
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Ikera
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Post by Ikera »

viewtopic.php?p=497266#497266

here is what I have been doing, but really I'm not planning for more than 8PSI boost so I'm thinking of switch back to stock MAF to make my life simple again
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