BP 93 vs Quik Trip Premium: Real world, dyno proven results!

**scheides** · 08-16-2009

So I have this friend with a really nice clean evo9. He's got some basic mods and a few weeks back I helped him install a fuel pump, stainless steal o2 housing, ported exhaust manifold, and ported his turbine housing for him while we had it off the car. A evo9 with MBC, exhaust, and tune should make about 290whp @ DB Performance. With his mods, he should hit right around 315whp. Well, the day I dyno'd my car (432whp woot!) he was on the rollers before me, and when I showed up for my appointment I helped troubleshoot what might be the problem with is car. It was running fantastic, except it was way down on power, about 270whp. We did a ton of tests, and the only thing we could find wrong was the throttle body seals were leaking slightly. VERY SLIGHTLY. Well, he replaced the TB with a ported and rebuilt unit, and went back. 270whp, no change. So, they decided to do a leakdown test at a later date.

He's from Rochester, and this time, he was out of gas when he got close, so he filled up on BP 93. The previous two times, he was on quik trip premium (92 or 93, not sure). Here's the before/after results:

BP 93 FTW! I love the stuff, my car made 388whp with it alone. I don't want to know what it would do on this other crap

Here's the full info/modlist/story:
http://www.evomn.net/forums/viewtopic.php?t=4247

123abc · 08-16-2009

That's interesting. I've been using kwik trip 92 octane with no problems thus far. Maybe I should start filling up with bp 93.

Forced Fed · 08-16-2009

SWEET!

I know BP is the shit as far as gas goes, I used to take my DSM the extra 20 miles if need be to fill up there.

However, I had filled up at Holiday before my tune... I wonder what the difference would of been between the two?

carltalon · 08-16-2009

was the car knocking on the quick trip fuel? or was it just down on power? How mutch boost?

Forced Fed · 08-16-2009

Good question carltalon... I'm assuming he was able to run MORE boost without knock with the BP than the Kwik Trip gas and that's why the power was higher right?

This wasn't the same boost level and just different gas was it?

awd-drifter · 08-16-2009

BP is quite the good one. I "feel" that the BP does bring more power, but to little to notice. But comparing the BP with Holiday Gas Stations, i feel the difference with BP.

**scheides** · 08-16-2009

Quote:

Originally Posted by carltalon

was the car knocking on the quick trip fuel? or was it just down on power? How mutch boost?

Quote:

Originally Posted by Forced Fed

Good question carltalon... I'm assuming he was able to run MORE boost without knock with the BP than the Kwik Trip gas and that's why the power was higher right?

This wasn't the same boost level and just different gas was it?

24psi peak on both fuels. It was pretty much fully tuned out on both setups, shane was at the controls tweaking timing. AFR 11.0 across the board, not sure how much difference in timing there was.

Forced Fed · 08-16-2009

Oh, that makes sense.

More timing > more boost.

**4seasons69** · 08-16-2009

thats pretty crazy. I only run the bp 93 but thats because the shop I work at is a bp

**Shane@DBPerformance** · 08-16-2009

It was the same exact boost and same exact A/Fs. On the Kwiktrip gas the car was too prone to knock and we had to run lower than normal timing. His first pull on the BP 93 with no changes to the tune netted around 10awhp more. Then I was able to get a decent amount more ignition timing into the tune with the BP 93. The BP 93 he had was even noticably better than the BP 91/92 that we were always happy with.

The Evos run much less timing and are much more sensitive to timing than DSMs, so even being able to safely run 1 degree more can me a decent power gain with the stock turbo. 90% of the HP gains on an E85 stock turbo Evo are from more ignition timing, you might be running the same or 1 psi more of boost at 7000RPMs on E85 vs pump gas, because the turbo is just maxed to begin with and won't make much more boost in the upper RPMs.

Forced Fed · 08-16-2009

Doesn't surprise me at all about my car now.

The guy who bought my car changed out the injectors to bigger ones and street tuned the car using DSMlink and WINTER e85. He said he made another 100whp when he dynoed it, compared to when I had it dyno tuned with DSMlink and Holiday 92.

The most amazing part is it was only around 4 lbs more of boost, but I'm assuming a lot more timing...

Edit - BTW I understand that it is a little different comparison, e85 to pump... but honestly 100 more whp??? That is like going from pump to C16 and e85 is only like 105 octane. So I think that says something about the quality of Holidays pump gas, shit.

FattyBoomBatty · 08-16-2009

If/when I switch to e85 in the quest, I am honestly expecting 100 more whp, and if it doesn't happen, I'll be sad, in which case, I'll sell the engine or maybe the whole car, haha. j/k.

http://www.youtube.com/watch?v=wWgTl...layer_embedded

**Shane@DBPerformance** · 08-16-2009

E85 is not crazy octane, but it is actually comparable to C16 when it comes to what you can get away with tuning wise on most forced induction cars. It's definately better than your run of the mill 110 octane race gases.

Forced Fed · 08-16-2009

I'm assuming that is because of its crazy cooling properties Shane? I've heard of people not running Intercoolers once they switched to E85.

**4seasons69** · 08-16-2009

correct me if I'm wrong but the cooling properties help but I think most of it is the large octane jump from pump to e85 that make the biggest jump in hp cause octane rating is the fuels ability to resist detonating

**Kracka** · 08-16-2009

I <3 BP Ultimate!

awd-drifter · 08-16-2009

must be the INVIGORATE! lol. jk.

It's suprising to see how much the BP93 differs from other Gas stations with 93 octane. The only BP i know that serves the 93 is off Robert Street in West St.Paul.

Constant_Project21 · 08-16-2009

There's two right by my house and I only used bp ultimate in my dsm.

**Kracka** · 08-16-2009

Most metro area BP's now serve the 93 octane.

Forced Fed · 08-16-2009

Quote:

Originally Posted by 4seasons69

correct me if I'm wrong but the cooling properties help but I think most of it is the large octane jump from pump to e85 that make the biggest jump in hp cause octane rating is the fuels ability to resist detonating

I think that the octane jump helping resist detonation is an obvious. That wouldn't explain why E85's tuning properties are similar to C16's tuning properties on forced induction. It is the cooling properties E85 has that allows this I'd assume more than the obvious boost in octane rating.