MAF Help Needed
Thread Starter
Drifting
Joined: Oct 2006
Posts: 1,694
Likes: 0
From: Beaverton Oregon
MAF Help Needed
So while I have the MAF off to lubricate the butterflies on the TB, I look inside (of the MAF) and notice that there are several cracks in the sensor module cylinder. The wires are fine and intact but the cracks concern me. They are small cracks but nonetheless, cracks. The part number on the bottom of the Bosch module is 0280213004. I have several questions: 1. Will this effect performance? 2. Can the module inside the MAF Tube be replaced? 3. How could it become cracked? 4. Is this Bosch part OEM or aftermarket? 5. Where do I get a replacement module? The tube the module is in is perfectly fine. Thanks.
Last edited by All2kool; Nov 24, 2006 at 02:22 PM.
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Originally Posted by All2kool
So while I have the MAF off to lubricate the butterflies on the TB, I look inside (of the MAF) and notice that there are several cracks in the sensor module cylinder. The wires are fine and intact but the cracks concern me. They are small cracks but nonetheless, cracks. The part number on the bottom of the Bosch module is 0280213004. I have several questions: 1. Will this effect performance? 2. Can the module inside the MAF Tube be replaced? 3. How could it become cracked? 4. Is this Bosch part OEM or aftermarket? 5. Where do I get a replacement module? The tube the module is in is perfectly fine. Thanks.
From what I recently read, the BOSCH is the way to go, since it had a burn-off circuit that the ACDelco version doesn't have.
I'd say that if the engine is running fine, I wouldn't be concerned. If you do decide to buy another MAF, you may want to consider doing what I did, hit the salvage yards and pick up one off a 'F' body (Camaro, Trans Am, etc.) for $50. They're interchangable and mine has worked fine for going on three years now.
A new one will give you "sticker shock".
Jake
Last edited by JAKE; Nov 20, 2006 at 05:59 PM.
Thread Starter
Drifting
Joined: Oct 2006
Posts: 1,694
Likes: 0
From: Beaverton Oregon
Originally Posted by JAKE
This "MAF repair" question has come up before and from all I've read, they aren't repairable, at least not by do-it-yourselfers" like we are.
From what I recently read, the BOSCH is the way to go, since it had a burn-off circuit that the ACDelco version doesn't have.
I'd say that if the engine is running fine, I wouldn't be concerned. If you do decide to buy another MAF, you may want to consider doing what I did, hit the salvage yards and pick up one off a 'F' body (Camaro, Trans Am, etc.) for $50. They're interchangable and mine has worked fine for going on three years now.
A new one will give you "sticker shock".
Jake
From what I recently read, the BOSCH is the way to go, since it had a burn-off circuit that the ACDelco version doesn't have.
I'd say that if the engine is running fine, I wouldn't be concerned. If you do decide to buy another MAF, you may want to consider doing what I did, hit the salvage yards and pick up one off a 'F' body (Camaro, Trans Am, etc.) for $50. They're interchangable and mine has worked fine for going on three years now.
A new one will give you "sticker shock".
Jake
Raping an F-Body is what I'll do. Are the 305 and 350 TPI's interchangeable?
Le Mans Master
Joined: Oct 2003
Posts: 6,130
Likes: 2
From: seattle WA
the MAF is a sensor that measures the amount of air that flows through it, and that information is sent to the ECM to control fuel delivery. I know of only one forum member that has removed his MAF (against alot of advice) but you need to have your ECM reprogramed..and you better be a genious in this field...Tequilaboy is pretty damn close. One (and I'm sure there are several) problems I see with this is re-sale!!! someone is going to end up with a POS they can't figure out, and a complete odd ball at that.
Kinda like if someone owned a vette and put in 32# injectors in a completely stock engine...and didn't inform the person who bought it.
Kinda like if someone owned a vette and put in 32# injectors in a completely stock engine...and didn't inform the person who bought it.
Last edited by rick lambert; Nov 20, 2006 at 08:13 PM.
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Originally Posted by All2kool
Sticker Shock? That's an understatement if I ever heard one! Several places I checked want more than $740! Plus shipping!
Raping an F-Body is what I'll do. Are the 305 and 350 TPI's interchangeable?
Raping an F-Body is what I'll do. Are the 305 and 350 TPI's interchangeable?
So I hit the salvage yard and bought one off a 350 TPI Camaro and it's the same one I'm still running. FIFTY BUCKS.
I never tried one off a 305, but I suspect it will work just as well. The MAF doesn't know (or even care for that matter) how many cubes are behind it.
For example, when I pulled the 350 and installed my current engine, which is a 415 CID, I used the same MAF without a hitch. Sure, I had to have the ECM re-programmed, but the MAF remained unaltered.
The difference between a 305 and a 350 is 45 cubic inches; the difference between a 350 and a 415 is 65 cubic inches - see what I mean?
Hope this helps.
Jake
Last edited by JAKE; Nov 21, 2006 at 12:15 PM.
Melting Slicks
Joined: Aug 2003
Posts: 3,377
Likes: 387
From: Lakeville MI
I just saw this a couple of days ago. Contemporary Corvette has decent prices on new Delco MAFs under new parts.
http://contemporarycorvette.com/
I have a Micro-Tech MAF myself, but the calibration was way off compared to the Bosch MAF it replaced. I posted some threads awhile back on the calibration effort required to get mine close.
It was ok in the idle region, but the error grows as the flow increases and it tended to to overestimate the flow considerably off idle and above.
You never know what you're gonna get with an aftermarket maf, so expect to have some tuning issues.
http://contemporarycorvette.com/
I have a Micro-Tech MAF myself, but the calibration was way off compared to the Bosch MAF it replaced. I posted some threads awhile back on the calibration effort required to get mine close.
It was ok in the idle region, but the error grows as the flow increases and it tended to to overestimate the flow considerably off idle and above.
You never know what you're gonna get with an aftermarket maf, so expect to have some tuning issues.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Thread Starter
Drifting
Joined: Oct 2006
Posts: 1,694
Likes: 0
From: Beaverton Oregon
Originally Posted by All2kool
So why is the Bosch $749 when the Cardone Mass Air Flow Sensor is $145? Granted, the Cardone is a REMAN, but it does have a warranty.
Last edited by All2kool; Nov 22, 2006 at 11:43 AM.
Safety Car
Joined: Dec 2004
Posts: 4,088
Likes: 0
From: Poop land
I've been running for 2,500 miles so far without my MAF + tequilaboy's custom tune. Not a single problem whatsoever. Look my best ET and mph at the strip. Look at the dyno results. This has been the most reliable my Vette has EVER been, hands down.
I feel like GM purposely put a MAF on my car just so it can stall daily. Needless to say, I sold that Microtech MAF since I'll never be needing it again. Hate me hate me hate me!
I feel like GM purposely put a MAF on my car just so it can stall daily. Needless to say, I sold that Microtech MAF since I'll never be needing it again. Hate me hate me hate me!
Racer
Joined: Sep 2005
Posts: 484
Likes: 0
From: Redwood City CA
Originally Posted by kopbet89c4
I've been running for 2,500 miles so far without my MAF + tequilaboy's custom tune. Not a single problem whatsoever. Look my best ET and mph at the strip. Look at the dyno results. This has been the most reliable my Vette has EVER been, hands down.
I feel like GM purposely put a MAF on my car just so it can stall daily. Needless to say, I sold that Microtech MAF since I'll never be needing it again. Hate me hate me hate me!
I feel like GM purposely put a MAF on my car just so it can stall daily. Needless to say, I sold that Microtech MAF since I'll never be needing it again. Hate me hate me hate me!
Hmmmm thats very interesting, I wonder if anyone else out there has done this... I would very much like to hear from them about it...
101st Airborne
Safety Car
Joined: Dec 2004
Posts: 4,088
Likes: 0
From: Poop land
**** me, kill me, hate me, flame me... for not using a MAF sensor! 
For the last 2,500 miles I've run without one, I've had nothing but superb performance, drivability and reliability all along. A/F tuning was hit on the head of the nail. 12.5:1 A/F ratio on WOT.
Technically, you shouldn't even need a tune to run a MAFless tune if you are using the stock TPI intake. Just make sure you have no vacuum leaks whatsoever as that will make your car virtually undrivable. Throttle input is generated through your TPS. The ECM uses signals from the TPS to generate a simulated MAF signal.
I actually ran quite well 15 minutes ago with my stock prom. But that SES was on all the time...
I needed a tune mainly to turn off that SES light for the lack of a MAF, removal of VATS, EGR and special fuel enrichment due to the fact I have a Miniram and not a stock TPI intake. On a stock tune I'd run slightly lean at 13.6:1 A/F on higher rpms, high load (cell 15) simply because the Miniram flows significantly more air at higher rpms.
There's nothing wrong with a little innovation.
For the last 2,500 miles I've run without one, I've had nothing but superb performance, drivability and reliability all along. A/F tuning was hit on the head of the nail. 12.5:1 A/F ratio on WOT.Technically, you shouldn't even need a tune to run a MAFless tune if you are using the stock TPI intake. Just make sure you have no vacuum leaks whatsoever as that will make your car virtually undrivable. Throttle input is generated through your TPS. The ECM uses signals from the TPS to generate a simulated MAF signal.
I actually ran quite well 15 minutes ago with my stock prom. But that SES was on all the time...
I needed a tune mainly to turn off that SES light for the lack of a MAF, removal of VATS, EGR and special fuel enrichment due to the fact I have a Miniram and not a stock TPI intake. On a stock tune I'd run slightly lean at 13.6:1 A/F on higher rpms, high load (cell 15) simply because the Miniram flows significantly more air at higher rpms.
There's nothing wrong with a little innovation.
Le Mans Master
Joined: Sep 2006
Posts: 6,050
Likes: 147
From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
Maf
for those of us who have to pass emissions, they do a visual check, and if the car is different from the picture they hold up, it won't pass.
Then it's off to arbitration, and a fine if they determine the car could be repaired by replacing a failed part. (why would you take it off anyway unless it failed)
Too much hassle, and not worth it. I'd rather hide my mods from the feds
Then it's off to arbitration, and a fine if they determine the car could be repaired by replacing a failed part. (why would you take it off anyway unless it failed)
Too much hassle, and not worth it. I'd rather hide my mods from the feds
Le Mans Master
Joined: May 2005
Posts: 5,214
Likes: 65
From: Queensland, AUSTRALIA
Originally Posted by kopbet89c4
There's nothing wrong with a little innovation.
That is a bloody rice burner air filter attachment on there!!! Why is there a coil there in the middle of the fuel rail?? Did you nab that from an unreliable LT1?
Safety Car
Joined: Dec 2004
Posts: 4,088
Likes: 0
From: Poop land
Originally Posted by Casethecorvetteman
Inovation or abomination??
That is a bloody rice burner air filter attachment on there!!!
That is a bloody rice burner air filter attachment on there!!!
Originally Posted by Casethecorvetteman
Why is there a coil there in the middle of the fuel rail?? Did you nab that from an unreliable LT1?
Safety Car
Joined: Dec 2004
Posts: 4,088
Likes: 0
From: Poop land
Originally Posted by Casethecorvetteman
Why on earth is your coil out there anyway??
The fuel rail is the most secure location.
Melting Slicks
Joined: Aug 2003
Posts: 3,377
Likes: 387
From: Lakeville MI
Originally Posted by kopbet89c4
I couldn't figure out any other place I can mount it on without it being on securely and bouncing all around...
The fuel rail is the most secure location.
The fuel rail is the most secure location.