Blow Through setup

[MATTs14]

I tried running blow through on my setup but had to run it right out of a 90 due to not much intercooler piping. Where do you guys suggest running it? I now have it off the turbo but it comes off the intake at a 90

[Darius]

Try to put it at the end of the longest straight run of pipe you have. It really doesn't matter since you'll be tuning your fuel maps around what the wideband sees on the back side anyways.

[MATTs14]

For some reason its really finicky. I put it in my intercooler piping and it wouldnt idle. I put it on my turbo and it idles but not as good as it does with it unplugged. I guess i could put it right out of the intercooler but i guess that would affect it too

[StricNyne]

you could go with a map setup via the new haltehc platinum 2000

[MATTs14]

s*** i wish i could but thats pushin 2000 dollars if i remember correctly. I have about 1000 to throw at some engine management which is why I'm leaning towards Nistune.

[cdorhout]

You may have to do an idle re-learn (if you have a PowerFC) so the car can relearn how to idle with the new flow characteristics with the MAF moved to blow through. I basically retuned my whole map after moving it.

[StricNyne]

there was a group buy e had going u coulda got one for 1400

[eh?]

How much HP are you going for?You can save a little bit more and get a ViPec v44 which is around 1200-1300usd and I've seen barely used rb25 aem ems go for about 1100.Ditch the Maf, they can be so finicky. Seems like 9 in 10 RB problems are maf related. I think I was in your same situation about 4 years ago trying to get the pfc to run with a blow through Q45 maf. Damn thing kept popping off and I said screw it, and ordered the aem. It's been a super reliable setup now with the cas issue taken care of.

[StricNyne]

cas issue scared me off the the AEM

[Carl H]

my car has run for the past 4+ years now in blowthru configuration and been just fine...do you have any pics?

[eh?]

cas issue scared me off the the AEM

Understandable but all the issues are taken care of. Having said that for $1400 there's no doubt I'd take the Haltech over the aem.

[300Plus]

been running my blow through with stock maf for 2+ years. Mine sits on the cold side piping about 11inches from the Throttle body not problems what so ever with it

[StricNyne]

minor thread jack, with the AEM have you found any tuners local to NJ, idk if u remebe ri picked up that long block from you some time ago, a buddy of mine is looking to get his aem ftc tuned

[MATTs14]

How much HP are you going for?You can save a little bit more and get a ViPec v44 which is around 1200-1300usd and I've seen barely used rb25 aem ems go for about 1100.Ditch the Maf, they can be so finicky. Seems like 9 in 10 RB problems are maf related. I think I was in your same situation about 4 years ago trying to get the pfc to run with a blow through Q45 maf. Damn thing kept popping off and I said screw it, and ordered the aem. It's been a super reliable setup now with the cas issue taken care of.

Eventually I would like to see around the 500whp mark but that will be in the future with a bigger Holset and possibly some internals and head work but I always like to have room to grow on. My pricing on all the EMS's has been way off lately.

And about the MAF problems, I have to agree that i do see a lot of problems with the MAF but i've always heard that the Map sensors are finicky when you start working on your starting and idle portion of the map in extreme weather conditions (Cold and hot).

Where do you guys find all these used AEM units and deals? I shouldve had sense enough to have bought some sort EMS beforehand but live and learn i guess. And what Haltech is the most user friendly as far as plug and play goes? I know that i wont be able to plug it in and go but I really don't want something that requires reworking my whole harness (megasquirt).

Anyways, thank you guys for all the help! I try to ask the most reasonable questions and in turn help diagnose others problems along the way.

[MATTs14]

been running my blow through with stock maf for 2+ years. Mine sits on the cold side piping about 11inches from the Throttle body not problems what so ever with it

If you don't mind could you throw some pictures of it up? I tried to run as little intercooler piping as possible so I put on a 90 degree pipe off the intercooler, a 90 coupler and something similar to i guess a 100 degree angle or similar that connects right to my throttle body. That's sorta why I'm having trouble with putting it in any ideal spot.

[Carryl]

car was still green.. so this pic must be 2 or 3 years old.....been running blow through for that long flawlessly......

[MATTs14]

See i put mine coming out of a 90 and it flipped out! Maybe its on its way out the door.

Darn you guys!! I want the Haltech platinum 2000 now!! lol I think its time to start saving

[ralphsdiorama]

Do people move the MAF over to the coldside purely because of a lack of space or are there advantages to having it on the coldside?

[eh?]

And about the MAF problems, I have to agree that i do see a lot of problems with the MAF but i've always heard that the Map sensors are finicky when you start working on your starting and idle portion of the map in extreme weather conditions (Cold and hot).

Where do you guys find all these used AEM units and deals?

For map powered cars there is a temperature correction table, you just tune that for air temp variations. That said I've never had a problem starting in the cold or extreme hot. Closed loop idle/cruise is wideband controlled, so I don't even mess around with it. There are way more high HP map cars than maf cars out there. With a tune by someone *who knows what they are doing* a maf car will not drive any better than a map car.I see ems's all the time on ebay and other forums FSHere's one Zilviahttp://zilvia.net/f/sale-items....html

[MATTs14]

Thanks for clearing that up for me. I guess opinions are like...well you know. I really want to get away from the MAF sensor.

Ive been looking around and found a dealer in Alabama that has the Haltech PS2000 for relatively cheap. Any idea what sensors I'll need besides the IAT and 3 Bar Map sensor?

[eh?]

Opinions are the problem.. not enough real facts. Not sure about the haltech, Todd should be able to answer your questions.Have you looked into the Vipec v44? Should be cheaper, no patch harness needed and has a built in map sensor.Downside is finding a US based tuner if you need one.

[300Plus]

If you don't mind could you throw some pictures of it up? I tried to run as little intercooler piping as possible so I put on a 90 degree pipe off the intercooler, a 90 coupler and something similar to i guess a 100 degree angle or similar that connects right to my throttle body. That's sorta why I'm having trouble with putting it in any ideal spot.

I'm looking for a better pic but if you see the cold side pipe in this pic , right before it enters the engine bay you can see a T-clamp that is the MAF.

[MATTs14]

Opinions are the problem.. not enough real facts. Not sure about the haltech, Todd should be able to answer your questions.Have you looked into the Vipec v44? Should be cheaper, no patch harness needed and has a built in map sensor.Downside is finding a US based tuner if you need one.

Can the Vipec not be tuned by just any tuner?? There are a bunch of dyno shops around here, could they not do it?

Also i checked out there site and the Plug In ecu's they have seem pretty nifty. Any input on these? They seem to have nearly all the same features as the v44 and go in your standard ecu casing and have an on board map sensor.
Modified by MATTs14 at 8:22 PM 9/2/2009

[DrifterProdigy85]

Do people move the MAF over to the coldside purely because of a lack of space or are there advantages to having it on the coldside?

I talked to Sean from SCT about MAFs a few weeks ago. He said its best to run it in the cold piping to give the most accurate reading of airflow going into the engine. As long as you have a leak proof MAF, blow through is the way to go. Dont do it with the Z32 MAF. I tried that and it leaked like hell and i tried everything from rtv to epoxy and it just wouldnt seal.

[ralphsdiorama]

Nice, yea that makes sense. I guess you could also run your BOV to atmosphere w/o worry of your car running lean on each discharge. Another positive.

[eh?]

Can the Vipec not be tuned by just any tuner?? There are a bunch of dyno shops around here, could they not do it?

Also i checked out there site and the Plug In ecu's they have seem pretty nifty. Any input on these? They seem to have nearly all the same features as the v44 and go in your standard ecu casing and have an on board map sensor.

Modified by MATTs14 at 8:22 PM 9/2/2009

It's doubtful most tuners have any experience with the vipec software. I think it really boils down to the tuners comfort with the tuning interface. But given enough time, any competent tuner should be able to do it. Just a matter if they want to spend time learning the sw. I would just call em and ask.

Sorry I ment to say looking into getting one of the pnp ecu's. They are functionally the same as the V44.

[Yellow4g63]

Since people are posting pics of there blow through I'll do the same

[MATTs14]

I guess you're right I could call and ask but I would really like to pick something that is already popular and something most tuners know. I really want the Haltech and the ViPec looks pretty cool as well but I might just end up doing Nistune since I have a local tuner who uses it. I'm not sure, its up in the air right now
Modified by MATTs14 at 4:14 PM 9/3/2009

[Greg555]

I guess you're right I could call and ask but I would really like to pick something that is already popular and something most tuners know. I really want the Haltech and the ViPec looks pretty cool as well but I might just end up doing Nistune since I have a local tuner who uses it. I'm not sure, its up in the air right now

Vipec is awesome and its software is really intuitive so if you know how to tune then you know how to tune ViPecs

cas issue scared me off the the AEM

No issues when using ViPec

Screw MAF go MAP

Greg

[meet07]

Since people are posting pics of there blow through I'll do the same

I just posted this question this morning but ill ask someone that is using it:

-which cobra,lightning maf am I to use with nistune?? I prefer a cobra 80mm but either way im putting it into the tonsil style flange....

And the bov is suppose to be before the maf right??