damn, thanx for making me feel like crap with my full bolton car running ur times haha

 

This should be true for all turbos, however, this is only accurate for the peak boost/torque region.

As the revs/airflow goes up, the smaller turbos will be running out of breath, and you will observe that load < absolute boost (kpa), while bigger turbos will hold loads which are closer to the absolute boost in kpa at higher rpms.

Again Indy and 9sec9, the number really are even more impressive considering it's on a full weight car!

 

the reason I ask is I am on a green an hit between 295-300 load at 24-25 psi... I tuned a evo 9 on meth to 28 psi and it's around 320-330 load. Just trying to clarify. Not saying your wrong just giving examples. oh there were no leaks, I always do a leak test prior to tuning!

 

That sounds weird to me...

The results i have were from multiple turbos from stock evo8 to 35R setups, on pump, or pump + alky...

To be even more specific, I had those 3 different turbos on my personal car: stock evo9, green and red. I never had a 2-byte load reading more than 5-10 units higher than actual boost in kpa.

Are you logging boost through a map sensor, or just eyeballing the boost gauge? Did any of the cars had a hard intake pipe? It is know that hard intake pipes will mess with your maf signal, but it will usually only happen during idle/cruise.

Really sorry for hijacking your thread guys. Wasn't my purpose!

 

If on a stock turbo, you hit 26.3psi on a drag run, then your peak boost is significantly higher since you are using a MBC. This is a pretty misleading statement to be making.



So, you didn't just have two mods?


Good work so far, but after seeing this, I'm going to be reading in between the lines on any progress in this build.

 

Nice work guys, its good to see people push things to their limits.

 

Boltz, I make posts so that ALL INFORMATION is given. On those passes, 1 gallong of 98 was added to 3 gallons of 93. That's pretty plain and exactly what I posted. As for hitting 26.3 psi on a drag run, the 3 bar sensor doesn't give a hoot as to what the motor is doing. It reads what it sees. It sees 26.5 psi on the street and 24.x at the track. By raising it to 26.3 at the TRACK, you're still only making 26.3 psi of boost,unlessyou've found a way to make more boost than what the sensor reads. Are you stating that if we make 26.5 on the street that we're also doing the same 26.5 at the track? If so, how do you measure the 26.5 at the track and still be accurate, if not by using the sensor and what it reads.

The facts have been stated and what we've posted are facts. If you have to read between the lines, I wouldn't waste my time if I were you, because there's nothing there. As a matter of fact, it's posts like yours that I've nearly completely quit sharing any information. We're not two teenagers who tell lies. We're honest professionals who know what we're doing. Just because not everyone accomplishes low 12's on an mbc, filter and tune doesn't mean it can't, and isn't, being done.

 

And by the way, 26.3 psi WAS the peak boost on the run. Most of the run was 25 falling to 21 up top.

 

u guys better not quit till u hit 11.90s!! Great Job so far...u guys are hauling for such minimal $$ spent...How wide are the rims u guys are on? What kind of tires and size? what PSI were u dropping the tires too?? 26.5 psi is pretty sick for such a stock car...haha...

 

oh yeah...any videos of the car?? I think its funny to see an evo as quiet as yours go as fast as it is...haha...

 

The wheels are our OKIX street wheels, Volks 17x8.5 and the tires are BF Goodrich 225/45-17 Drag Radials. I've used them on my VW Bug for several years and had pretty good luck with them on the street, even though they're a little heavy. I was surprised to find that they still have an 8" contact area, even though they're 225's. I think several people have used them with pretty good results, so I bought them for 'class' reasons at David's shootout. New rules this year calls for 'Radials' and Dots, so we were kind of forced to at least have them ready. We seem to get best bite at 25 psi and when we lowered the pressures down to 22, we lost traction. The tire, wheel and stems weigh 39.5 I believe, so not much weight savings. I had the tires and wheels, so since he was running heavier than stock tires and 'hard' compounds too, we decided to give them a try. His 60's on the hard tires were 1.7's and so far the best on these is 1.62's.

 

Damn, good numbers mang!

 

We were going to test a little higher boost, but since it was Mothers Day and I was out to dinner with my Mother and Family, I didn't have time to adjust the timing. I quickly made a minor timing change and he raised the tires back up to 25 psi. Next time, we may try at least 1 psi more boost. Any way you look at it, we're not using many parts. Mitsu did a great job of creating the base to work with.

 

thanks for the quick reply...can't wait to see u guys hit 11s with $150 spent plus a tune...hopefully this coming week maybe??

 

Thanks Demolution. We appreciate those kinds of comments. I intend to make our 'How to run 11s with minimal mods' as soon as we reach 11.50. So far, we're running 93 octane blended with 98 to create about 95 octane. We use an MBC with 26.3 track psi and an air filter that only drops 3 kpa, from 98 to 95, 97.5 to 94.5 (based on the baro reading of the ecu) and tires/wheels that weigh about 39.5 lbs. That's it, except for the tune and excellent driving. I'll be releasing my maps when we hit 11.50.

Again, thanks for all of the comments from fellow racers. We're doing our best to maximize our parts.