GrimmSpeed Intake Before and After OFT Tune + Review

[Mad_Mike]

I love how plain/stock looking this intake is and how much visual room it clears up. I just wish I could believe that this would actually be better than a drop in filter. :/

[GrimmSpeed]

Originally Posted by Mad_Mike

I love how plain/stock looking this intake is and how much visual room it clears up. I just wish I could believe that this would actually be better than a drop in filter. :/

Seeing is believing I hope! We've posted more dynos of more setups than anyone else so far in our development thread. From stock pulls, to drop in, to silicone elbow, to drop in plus silicone elbow, to each of those combinations with modified snorkels, and even competitors intakes. I don't know how much more we could do to show this has an advantage over a drop in filter!

I plucked this from post #1173 of the development thread:

"The gains in power over the drop in filter are EVERYWHERE. Most intakes are good or even noticeable if you happen to drive your car between 6300 and 7300 rpms daily, otherwise gains anywhere else in the powerband generally don't exist. The drop in filter and other intakes we tested don't show gains in the torque dip, which is definitely something you experience in normal driving constantly.

I think that the AFRs are a little better than "slightly," as hitting nearly 14.0 AFRs at WOT is fairly unacceptable. Continue to hit AFRs that lean, and you risk knock, which will then lower your advance multiplier, and all the sudden those gains you were making will be all gone. THAT is the major advantage of mimicking the stock AFR curve, especially when you get into tuning it.

The time to install will vary for people. There is NO DOUBT that spending 50 bucks on a filter, and being able to just drop it in, and make a few horsepower is awesome. But there is also something to be said about having a fun, short project to work on, especially one that drastically changes the appearance of the engine bay. Some people will love this, and some people will choose not to get the tools out and wrench on their cars, we completely get it!

I threw together a dyno chart that shows some key points. What is shown in this dyno chart is stock intake, K&N Drop in only, K&N with silicone elbow, and GrimmSpeed intake. All have stock snorkel, so this represents how most people will install their intakes, especially to save on time.



The GrimmSpeed intake makes more power than both options from 2200 rpm, all the way to 7000 rpm, where if you look at the AFRs it has gone richer than stock. The K&N drop in alone actually loses a little in the torque dip, makes about 1hp over stock for most of it's horsepower curve until 6300 rpm where it picks up a little less than 3hp. It's a solid gain for very cheap, but the AFRs are a full point leaner (and sometimes more) the entire time. When you add a silicone elbow into the mix there is a slightly improved gain nearly everywhere (but still less than the GrimmSpeed intake) but the AFRs are even worse between 5000 - 6300 rpm, where it even crosses over 14.0 AFR.

All in all, this shows that we've made something that makes power over a cheap and great option, without making power by being excessively lean, in an attractive package. We understand that this option isn't for everybody, but for a daily driver this will be one of the best options available for these exact reasons. We're not here to trick anyone, post false dynos, or show anything that you yourself could not go to a dyno and perform yourself. We want to show everyone what we've accomplished (very proudly we might add), and show how it performs against other options honestly. I don't think there is another company out there that is doing what we're doing here."

Chase
Engineering

[GrimmSpeed]

Originally Posted by Fast_Freddy

Yeah, I knew that but my post wasn't clear enough.

What I didn't know was that your intake makes ~10 whp more than the stock one. I haven't seen those dyno sheets yet.

Nice intake.

Yep, we haven't been plastering the forums with them, since the most valuable dyno sheets, to us, are the ones that customers like Fletch post up with their own personal findings.

With that said, here's a chart from our dyno testing of the final production intake.



Matt Beenen
Engineering

[phrosty]

Originally Posted by GrimmSpeed

With that said, here's a chart from our dyno testing of the final production intake.

Can you please post a dyno run comparing OFT OTS 2.x with stock intake vs. OFT OTS 2.x with your intake and MAF scale?

I'd love to see how much gain to expect. I love my Perrin intake, the noise it makes is so sexy, but I'm getting sick of taking my bumper off to clean the filter. Looking at my options and this would go a long way toward my decision.

[GrimmSpeed]

Originally Posted by phrosty

Can you please post a dyno run comparing OFT OTS 2.x with stock intake vs. OFT OTS 2.x with your intake and MAF scale?

I'd love to see how much gain to expect. I love my Perrin intake, the noise it makes is so sexy, but I'm getting sick of taking my bumper off to clean the filter. Looking at my options and this would go a long way toward my decision.

We cannot post that because we don't have any of that data. As far as I know the highest OTS maps out are 1.59, the only 2.0s are for the ESC and OFH cars if I'm not mistaken. We don't have the GS Intake OFT tune yet because it hasn't been posted to my knowledge. And now that there is snow and ice on the ground we will have to wait until it melts to do any more dynos. So trust me, we're interested to see as well.

I can tell you that we did do pulls with OFT 1.59 with stock intake when we dyno'd last time, and our intake untuned was able to out perform the stock intake + OFT 1.59 tune almost everywhere, but still not in the torque dip where Shiv was able to add TONS of power.



Run 1 is stock intake stock tune, run 3 is stock intake with OFT 1.59 tune, and run 5 is GS Intake UNTUNED, and run 7 is the GS Intake with the 1.59 OTS (not the GS Intake tune). So like I said, we're extremely excited to get our hands on this tune as well, and will get it on the dyno as soon as we can, weather permitting. So while I can't answer your specific question, this information alone should be a good indicator that that our intake WITH the new OFT tune will be a beast.

Chase
Engineering

[mid_life_crisis]

Originally Posted by GrimmSpeed

We cannot post that because we don't have any of that data. As far as I know the highest OTS maps out are 1.59, the only 2.0s are for the ESC and OFH cars if I'm not mistaken.


Chase
Engineering

You are mistaken. The 2.x are out for all levels from stock on up.
There is also a significant improvement from 1.x to 2.x. There would not be such a difference if that dyno was with a 2.x map. Of course, with what they learned developing the 2.x, they could probably get even more from your intake too.

[GrimmSpeed]

Originally Posted by mid_life_crisis

You are mistaken. The 2.x are out for all levels from stock on up.
There is also a significant improvement from 1.x to 2.x. There would not be such a difference if that dyno was with a 2.x map. Of course, with what they learned developing the 2.x, they could probably get even more from your intake too.

Interesting. When i go to the website, select the 86 category, and go to downloads it brings you to this page: http://www.openflashtablet.com/produ...ads/index.html

But after poking around the software forums (which I rarely get to do anymore), I was able to find this link: http://openflashtablet.com/Automotiv...ads/index.html

Which has the missing 2.0 files, which i would have NEVER found. However, I wasn't able to find any dyno charts showing the significant improvement from 1.59 to 2.0 that you're talking about. But you're right, since this GS Intake OTS tune was only developed a few weeks ago, it's probably safe to assume that it has said improvements included.

Chase
Engineering

[mid_life_crisis]

Originally Posted by GrimmSpeed

Interesting. When i go to the website, select the 86 category, and go to downloads it brings you to this page: http://www.openflashtablet.com/produ...ads/index.html

But after poking around the software forums (which I rarely get to do anymore), I was able to find this link: http://openflashtablet.com/Automotiv...ads/index.html

Which has the missing 2.0 files, which i would have NEVER found. However, I wasn't able to find any dyno charts showing the significant improvement from 1.59 to 2.0 that you're talking about. But you're right, since this GS Intake OTS tune was only developed a few weeks ago, it's probably safe to assume that it has said improvements included.

Chase
Engineering

The website is frustrating at best. You should try it on an Android tablet .
The trick is to go to the Site Map then choose Downloads from the FR-S section. You get a different list.

[Turdinator]

I am running the OTS 2.0 and the GrimmSpeed intake and it is super smooth. It is the best idle and low rev drivability I have had on my car yet including stock everything.

[Wepeel]

Originally Posted by GrimmSpeed

Run 1 is stock intake stock tune, run 3 is stock intake with OFT 1.59 tune, and Run 7 is GS Intake UNTUNED.

So your intake+stockTune made more power than the stockIntake+OFTtune? Nice.

[GrimmSpeed]

Originally Posted by Wepeel

So your intake+stockTune made more power than the stockIntake+OFTtune? Nice.

It is, but I realized that I had posted a dyno of the 1.59 OTS tune, and called it the stock tune. I realized it this morning, and have now corrected it, showing the additional run. It still makes more power over the stock intake with the OTS tune everywhere after the torque dip, but there is just no touching the cam timing optimizations that Shiv figured out before that.

With the 1.59 OTS, it is awesome, even MORE power. The sound it makes during the cam change in the torque dip through the airbox is nothing short of amazing. We can't wait to get our hands on the dedicated GS Intake tune OTS from Shiv, even though we probably won't be able to drive our car for a while til the snow melts

Chase
Engineering

[Malt]

Originally Posted by GrimmSpeed

The GrimmSpeed intake makes more power than both options from 2200 rpm, all the way to 7000 rpm, where if you look at the AFRs it has gone richer than stock. The K&N drop in alone actually loses a little in the torque dip, makes about 1hp over stock for most of it's horsepower curve until 6300 rpm where it picks up a little less than 3hp. It's a solid gain for very cheap, but the AFRs are a full point leaner (and sometimes more) the entire time. When you add a silicone elbow into the mix there is a slightly improved gain nearly everywhere (but still less than the GrimmSpeed intake) but the AFRs are even worse between 5000 - 6300 rpm, where it even crosses over 14.0 AFR.

This is the reason alone I just ordered your intake when I initially had not planned on running one. I've got a Perrin silicone inlet and panel filter and I've been quite happy with my results. However, I am not happy with the slight AFR and trim issues I've been having with my setup. Obviously swapping to a dedicated intake when I've already got a decent setup is overkill but the peace of mind that I'll be running a setup that's been proven to be safer is worth the additional cost.

[unsurety]

I can't wait for the OFT tune for this!

@Jolaessss @ck-GT86

[Mad_Mike]

Originally Posted by GrimmSpeed

Seeing is believing I hope! We've posted more dynos of more setups than anyone else so far in our development thread. From stock pulls, to drop in, to silicone elbow, to drop in plus silicone elbow, to each of those combinations with modified snorkels, and even competitors intakes. I don't know how much more we could do to show this has an advantage over a drop in filter!

Chase
Engineering

Ok, so what about on a tuned car? I'm trying to convince myself to get one but I already have a filter and a tune. I have pretty good gains without the high Afr issue. High flow filter tuned vs grimmspeed intake tuned what are the gains?