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how much can a MP5 handle
how much can a MP5 handle if it is turboed psi wise with out blowing the engine and what I need to prevent from the engine blowing up.....help will be greatly appreicated
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Thats a very open-ended question. I suggest you read "Maximum Boost" by Corky Bell before you go any further. It appears as though you have very little knowledge of turbo systems and you don't want to try to boost a motor until you have all of the facts you need.
p.s. Engine strength isn't the limiting factor when it comes to turbocharging it's Engine Management (i.e. tuning) that determines these things. If you're serious about boosting your motor you should pick up an AEM EMS that I'm doing the GB on the vendor section. |
Re: how much can a MP5 handle
Originally posted by PakmanMP5 how much can a MP5 handle if it is turboed psi wise with out blowing the engine and what I need to prevent from the engine blowing up.....help will be greatly appreicated I have seen turbo'd mp3's (same engine as p5's) with the MPI Tuner running 12-14 PSI! Some people with high boost kits are running like 16psi w/ Haltek EMS. The AEM is still being tested...I belive the highest they have run is on a turbo p5 runnin like 4psi?? I have the mpi tuner runnin 6psi..and am plannin to up the boost in the next month! Gonna Run 8psi daily and 10psi on track! Chas:D |
oh crud, here we go.....
As far as engine management is concerned: You get what you pay for. While a $.99 McChicken sandwhich will keep you from dying of hunger a Hardee's $6 dollar burger will do it with ferver! Same goes with the difference in tuning devices. One is cheap and only controls spark and fuel (bare minimum for tuning) The other is more expensive and will control almost every facet of tuning and driveability including, traction control, on-board dyno, hot-swappable mapping, datalogging etc...That's the way to go if you're serious about performance and tuning. If you just want to get by safely then the MPI may work wel for you. "nuff said. |
Originally posted by Roddimus Prime oh crud, here we go..... As far as engine management is concerned: You get what you pay for. While a $.99 McChicken sandwhich will keep you from dying of hunger a Hardee's $6 dollar burger will do it with ferver! Same goes with the difference in tuning devices. One is cheap and only controls spark and fuel (bare minimum for tuning) The other is more expensive and will control almost every facet of tuning and driveability including, traction control, on-board dyno, hot-swappable mapping, datalogging etc...That's the way to go if you're serious about performance and tuning. If you just want to get by safely then the MPI may work wel for you. "nuff said. MPI offers datalogging, boost control, extra injector & stock injector setup, full timing & fuel control. I am not trying to start any war w/ aem..just trying to give the guy some ideas on what's going on OTHER THAN AEM! Chas:D |
if you actually read the dyno charts, the AEM unit was able to pull more wheel horsepower (175+) out of merely 4 psi with a smoother powerband than any other kit at 6 psi. Simply put, this is due to better tuning from a more advanced unit.
The MPI tuner is cheap. The AEM will not be as cheap. You will get what you pay for. Thats my personal and professional opinion. Save your pennies and go with the AEM for some real power. |
Originally posted by Ken@ProtegeGarage if you actually read the dyno charts, the AEM unit was able to pull more wheel horsepower (175+) out of merely 4 psi with a smoother powerband than any other kit at 6 psi. Simply put, this is due to better tuning from a more advanced unit. The MPI tuner is cheap. The AEM will not be as cheap. You will get what you pay for. Thats my personal and professional opinion. Save your pennies and go with the AEM for some real power. http://www.msprotege.com/members/505...no%20sheet.jpg http://www.msprotege.com/forum/showt...hlight=505zoom Chas |
wow, those dyno charts look like crap compared to the AEM dyno's running base maps. That probably didn't help your case any.
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plus his maps were conservative..b/c he is still learning how to tune..not to mention..he finally got a wideband! |
MPNick doesn't provide a good clean map for him to start with?? wow, if I were to purchase something like that I'd want to know it would at least be pre-tuned somewhat where I could make my own changes/improvements/adjustments on my own time.
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Uh..not piggy/standalone..will come pretuned..to be perfect..you will have to tune any ems you get...Even perfnick told me that you will need to tune w/ his ems!
Chas :p |
I was speaking of BASE MAPS....not advanced tuning after the fact....the pre-loaded software to make the vehicle run "factory new".
Do I really need to post the AEM dyno to show you the difference in this mpi map and the AEM BASE map??? p.s. The AEM at 3.5psi made 171whp 171lb/ft...the mpi car only made 200whp?!?! 6.5 psi more on the AEM is going to KILL those power numbers and look at the curves!! There is no area under them....it's all just a peak number. He's only hitting about 175whp during full acceleration. |
had to do it.
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Pay special attention to the power curves....notice how flat they are?? Also notice that there is no spiking of anykind to create false power numbers. Remember, peak horsepower is nothing. It's what you constantly pull out that determines how fast you go.
Very important, probably most important for a boosted car is the A/F ratios.....notice how the ratio starts off lean while the motor is not in boost. As boost builds it slowly starts richening up as an added precaution against detonation. The MPi dyno just dumps fuel....very bad. |
Please remember that Roni has alot of work done!
She has a custom tubular manifold..and T3 turbo(i think)! The 505zoom only has a fmic and he is runnin a t25! Chas:D |
bah, 200whp from a turbo kit is 200whp from a turbo....there are 1.8L cars making 180hp now....
just give it another week and you'll have some more proof of what good tuning can do. I'll be sure to post you the MSP dyno's with AEM....they are only a T25 with 5psi. |
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