Zulu Posted May 25, 2006 Report Share Posted May 25, 2006 Yeah, so I unplugged the wastegate for the track & for a few days...perfectly safe @ 22lbs, 10.6:1 AFR...etc. Not important. Threw some codes, read it with snap on scanner...only one that matters to me/performance is this...P0101 - Airflow out of rangeIs this basically saying that the MAF is reading 100% airflow, therefore it defaults to pulling timing/richness. So have I reached the limit of the stock MAF? What's the explanation/solution? 3'' MAF from a 99+, just wait for MAP with EMS, or hack the MAF to a larger diameter pipe? Also, threw a air/baro overload code or something, don't recall exactly...don't know if it's relevant to MAF. Link to comment Share on other sites More sharing options...
Che'_Moderator Posted May 25, 2006 Report Share Posted May 25, 2006 Plug the wastegate back in, run a mbc, don't even think about running a non calibrated MAF via hacked on hose. Link to comment Share on other sites More sharing options...
Zulu Posted May 25, 2006 Author Report Share Posted May 25, 2006 Not what I meant, was gonna run a larger diameter MAF with larger injectors as per math/choosing. MAF would be increased linearly with injector size. going about 49% larger injectors, so do the same with MAF...so 3.7'' about diameter. Link to comment Share on other sites More sharing options...
the underlørd Posted May 25, 2006 Report Share Posted May 25, 2006 oh i want to move it sooo bad.... Link to comment Share on other sites More sharing options...
Che'_Moderator Posted May 25, 2006 Report Share Posted May 25, 2006 Not what I meant, was gonna run a larger diameter MAF with larger injectors as per math/choosing. MAF would be increased linearly with injector size. going about 49% larger injectors, so do the same with MAF...so 3.7'' about diameter.Why even guess. You would be way off. Might as well random it. Plug the line back in get a MBC and see what happens. Link to comment Share on other sites More sharing options...
Zulu Posted May 25, 2006 Author Report Share Posted May 25, 2006 Why even guess. You would be way off. Might as well random it. Plug the line back in get a MBC and see what happens.How would I be way off? Stock size injector/new injector... multiply that by diameter of stock maf, add that number to diameter of stock maf. linear increase. I've always run with a MBC, never thrown this code...what I'm saying is that @ 22-23lbs the stock MAF is past it's limit, rather what I'm asking is..is it? Link to comment Share on other sites More sharing options...
JHEIII874T5M Posted May 25, 2006 Report Share Posted May 25, 2006 Jared, people on stock maf have seen over 22 PSI. I saw that back on my 850 and didn't throw a code. Link to comment Share on other sites More sharing options...
Che'_Moderator Posted May 25, 2006 Report Share Posted May 25, 2006 How would I be way off? Stock size injector/new injector... multiply that by diameter of stock maf, add that number to diameter of stock maf. linear increase. I've always run with a MBC, never thrown this code...what I'm saying is that @ 22-23lbs the stock MAF is past it's limit, rather what I'm asking is..is it?Your getting into a problem with more variables than your addressing. Slip angle, the thermo aspect, injector pulse timing and many other factors that will change when you just swap parts. The MAF on your car will out flow your engine. If anything the sensor is off-scale high. I doubt even that though. My 850s run 25psi and I know several S70s in that range. Link to comment Share on other sites More sharing options...
ms007 Posted May 25, 2006 Report Share Posted May 25, 2006 The next code your going to get is PO bent rods :( Link to comment Share on other sites More sharing options...
Mesoam Posted May 25, 2006 Report Share Posted May 25, 2006 there's people running that kind f boost on the stock MAF...PUT A BOOST CONTROLLER IN AND TURN IT TO THE PSI YOU WANT for the 100th time...joseph has to have like 10 laying arround, lol Link to comment Share on other sites More sharing options...
JHEIII874T5M Posted May 25, 2006 Report Share Posted May 25, 2006 there's people running that kind f boost on the stock MAF...PUT A BOOST CONTROLLER IN AND TURN IT TO THE PSI YOU WANT for the 100th time...joseph has to have like 10 laying arround, lol actually.. I have a dawes MBC literally brand new, untouched, new in box... bought it for a local then he backed out. Maybe you can put 2 on one car? Would still be interested in seeing what a 3" V70R maf and green injectors would do. :unsure: Link to comment Share on other sites More sharing options...
Zulu Posted May 26, 2006 Author Report Share Posted May 26, 2006 I realize/know other people are running more boost on stock MAF...more of a question of when it would be outflowed...never? How is it that most other MAF cars outflow stock at somepoint, i.e., 240s going to Z32 MAFs, but we have god MAF? Fine with me I guess. I have a MBC (have run 22lbs with it, but decided to pull wastegate to see if I'd make more), have a EBC, have another EBC coming in...I don't care yada yada, turbo is blown, clutch is blown...motor is being pulled soon, literally everything is getting changed, don't care. Not gonna bend rods Why green injectors Joe? I still run rich as hell @ 22lbs on stocks (realize they're prob @ 100% duty). Getting 630s anyways probably. Those Niemens fit right up eh? Link to comment Share on other sites More sharing options...
boostjunkie Posted May 26, 2006 Report Share Posted May 26, 2006 Would still be interested in seeing what a 3" V70R maf and green injectors would do. 99 Maf won't work on a 98-older car, I already tried.You shouldn't be maxing out the stock MAF, I know people have run more PSI than you with no probs. Link to comment Share on other sites More sharing options...
EricF Posted May 26, 2006 Report Share Posted May 26, 2006 I ran 27-28 psi at times and the car still ran fine with decent AFRs. It's all hot air at that point but eh.If you want to do something then try it and tell us if it works. If you want to talk to us about it for awhile and do nothing you're off to a good start!What did you run at the track? Link to comment Share on other sites More sharing options...
larryo108 Posted May 26, 2006 Report Share Posted May 26, 2006 I have a dawes MBC literally brand new, untouched, new in box... bought it for a local then he backed out.How much? Link to comment Share on other sites More sharing options...
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