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Old 05-18-2010, 09:21 PM   #1
flightwatch
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Thumbs up Cosmo Racing SRI review

Let me start off by saying that I have read and understand the thread about a sri/cai messing with MAFv and AFR. I did this mod understanding the possible issues that may come up. I also have a car that is completely paid off and out of warranty.

Ok, now that I got that out of the way...Cosmo has changed the intake design somewhat. When I got mine, it was shorter than the intakes that I have seen in pics from other forum members. It looks like they hacked off the last little bend before the MAF tube connects.
I do have to say that I am quite disappointed that, for over $100, Cosmo can't supply you with the pre-shaped brackets, pre-cut hoses, or even some simple instructions. Luckily, I have done several intake swaps before, so I had a pretty good handle on what to do before I started. Installation took me about 1 hour.

Now for the good stuff: After resetting the ecu, the car started normally and without hesitation. Idle was smooth and there was no stuttering or fluctuations. During the test drive, there was a noticeable gain throughout the entire powerband. There was absolutely no hesitation or stuttering whatsoever. I also did not get a cel. I am not completely sold on it yet, but so far it has not shown me any of the troubles that some have experienced. As it stands right now, I would suggest this to anybody that is looking to get some more power out of their n/a suby.
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Old 05-18-2010, 10:12 PM   #2
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^ Did you lose some low end torque, cause I know I did.
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Old 05-18-2010, 10:16 PM   #3
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do you have an auto or manual transmission? if you have a manual, give it a cpl weeks and it will likely stumble and shake when the revs fall to idle from anything above 2k or so.
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Old 05-18-2010, 10:35 PM   #4
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Quote:
Originally Posted by J-Chow View Post
^ Did you lose some low end torque, cause I know I did.
No noticeable loss on the low end

Quote:
Originally Posted by RaceFaceXC View Post
do you have an auto or manual transmission? if you have a manual, give it a cpl weeks and it will likely stumble and shake when the revs fall to idle from anything above 2k or so.
4eat here. Like I said, so far...so good, but I'm not 100% sold on it yet.
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Old 05-18-2010, 10:45 PM   #5
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Quote:
Originally Posted by RaceFaceXC View Post
do you have an auto or manual transmission? if you have a manual, give it a cpl weeks and it will likely stumble and shake when the revs fall to idle from anything above 2k or so.
yea mine's manual. I've changed out the stock filter and switched over to K&N and as well cleaned the MAF and throttle body. Still rough idle and hesitation. I might try resetting the ECU again. Maybe it's time to change my o2 sensors and drive belts
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Old 05-18-2010, 11:02 PM   #6
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Quote:
Originally Posted by flightwatch View Post
No noticeable loss on the low end


4eat here. Like I said, so far...so good, but I'm not 100% sold on it yet.
with the 4EAT, idle in "D" is much more stable since there is always a load on the engine that is greater than the load of the engine itself. So you may not experience the stumble and surge when rpms fall to idle while driving around. also, the tq converter will allow the rpms to climb above the area where the MAFv anomoly occurs unless you lock it by selecting a single gear. The rest of the bad things that come with an SRI/CAI on the MAF based EJ engines will still occur, though.
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Old 05-18-2010, 11:11 PM   #7
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As soon as I begin to notice any negative impacts, I will be switching over to the hybrid. The reason that I didn't go hybrid to begin with is because I wanted to do my own testing so that I can draw my own conclusions. I definitely like the outcome so far. It has given the 2.5 a well needed kick in the pants.

One thing nice about the Cosmo intake design is that it looks to be right about the proper length to convert it into a hybrid w/o having to hack it up. It might need a little bit longer coupler, but the angle is dead on.
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Old 05-19-2010, 08:27 PM   #8
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Please keep us posted if anything changes. Subscribing.
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Old 05-19-2010, 11:39 PM   #9
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i noticed i lost a little low end torque and really only gained a little high end plus loudness
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Old 05-20-2010, 01:01 AM   #10
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Interesting. I noticed much better pull through the entire rpm range. It's definitely louder...and in all honesty, I could do without the extra noise.

Still no issues with it. I am still annoyed that Cosmo didn't supply the right materials for installation. I am going to have to fab up a better bracket than the ones supplied. I will keep updating this thread as I break it in.
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Old 05-20-2010, 02:12 AM   #11
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i too have a cosmo and only noticed the difference up high. however, the noise is inhumanly annoying so i took it off.
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Old 05-20-2010, 08:33 AM   #12
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I have the cosmo CAI. I've had it on for about 9 months and have no issues. Not coming with instructions was quite annoying but installing it was easy enough to figure out.
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Old 05-21-2010, 04:48 PM   #13
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Update: I have noticed the issue with mashing the gas at lower rpms yesterday. I am not one to usually do that, but I had to due to the fear of getting broadsided while crossing 3 lanes of traffic. I also noticed much more power loss down low with the a/c running...much more than before the intake. That wouldn't be a huge issue, but I live in the desert, and I need my a/c. I'm going to leave it on for today, but as of right now, it will become a hybrid tomorrow
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Old 05-21-2010, 05:00 PM   #14
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Yup, that's always been my point. You never start out intending to mash the gas at low engine speed. You end up needing to do it because someone fracked up and now you're trying to get your ass out of the fire.
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Old 05-21-2010, 09:20 PM   #15
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williaty comes through again.

I think we need a complication of all the threads trying to claim solid gains and ending with hybrids. Not to disrespect you, flightwatch, we need people like you to try different setups on different models to see what happens. Real world applications are the only way.

Props to you, sir. Hope your hybrid conversion goes well.

Edit: Please let us know your results when moving to the hybrid and how it differs from a SRI in the real world since you'll be going right too it.

Last edited by cmiovino; 05-21-2010 at 09:40 PM.
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Old 05-23-2010, 04:01 PM   #16
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what size is the intake pipe, cause im looking to get a different filter cause i dont like the quality of the cosmo one.
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Old 05-25-2010, 11:34 PM   #17
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Ok, so I ended up not doing the hybrid for the sake of giving the sri a chance. After a week of evaluation, I have concluded that:
1: The hesitation is an issue...if I go to WOT from idle. I do this .005% of the time, so this is almost a non-issue for me.
2: I have not received a cel, so my car isn't pissed off at me.
3: The car pulls great all the way through to redline. In stock form, I could definitely tell that she was running out of breath past 5500rpms. That no longer happens.
4: I'm not going to say that there is no torque loss down low, because there is. I now have to go to 3500rpms to get the same pickup that I used to get just going to 3000rpms. Regardless, what I lost down low, I have more than made up for above 3500.

I am not saying that I have given up on the hybrid, or that I'm going to stick with this intake. I just want to see an issue before I go trying to correct it. Like the old saying...if it aint broke...don't fix it. I would also strongly recommend that if somebody does decide to get a Cosmo sri, get different couplers than the ones supplied. They are junk. When I swapped my couplers out, the hose clamp holding the coupler onto the tb had eaten entirely through the coupler.

To answer your question, I believe the intake diameter is 2.5"

I will keep updating this thread as time goes on.

Last edited by flightwatch; 05-25-2010 at 11:40 PM.
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Old 05-25-2010, 11:44 PM   #18
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#2 isn't necessarily true. The car can be plenty pissed and still not throw a CEL.
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Old 05-25-2010, 11:49 PM   #19
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I agree with williaty. But I am wondering, with the ECU go into a closed loop or whatever and not throw a CEL?
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Old 05-25-2010, 11:51 PM   #20
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CL/OL has nothing to do with wither or not it can throw a CEL. The DTCs in question are the "too rich"/"too lean" DTCs. Basically, that means that one of the Air/Fuel Learning Ranges has been pegged at max or min for 2 consecutive drive cycles. For most of the NA ROMs I've looked at it, max/min is 20%. 20% is a huge fracking error. Even if you're sitting at 19.5%, the CEL won't light up.
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Old 05-26-2010, 12:10 AM   #21
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I knew that I was going to get flack for that...I just couldn't think of any other way to put it. I know that I can't actually see whats going on without datalogging, but as of right now, nobody makes a tune for the N/A 2.5i 4EAT's...and I'm not going to buy a flasher/datalogger without getting a tune to go with it. Also, datalogging is already at the upper end of my comprehension level when it comes to ecu testing, so me attempting anything more involved would be an epic fail.
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Old 05-26-2010, 12:13 AM   #22
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Those are tunable with the OpenSource tools. Just find a tuner who works with the OS tools and go get tuned.
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Old 05-26-2010, 07:08 PM   #23
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i see that you like the changes made with the SRI, so why not keep 99% of the gains, while correcting a couple problems that the SRI brings with it, like hot IAT's and very low RPM MAF error? in either case, a tune is a good idea.

props on going about changing your car in a way where you learn something useful.
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Old 05-26-2010, 08:35 PM   #24
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I would love to get tuned if I can find a reputable suby tuner in Vegas. I'm am not one to take a car to Joe Schmuck that's been tuning fox bodies his whole life. I have always been a huge advocate for tuning...even if the car is stock, and this is the First car that I have ever owed that wasn't in a tuning shop with in 2 weeks of owning it.
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Old 05-30-2010, 08:50 PM   #25
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So I went out to change the SRI to a hybrid today, but couldn't do it. I bought a 6" aluminum extension, but it's too long by about 2". I refuse to hack up the pipe, but I might end up having to if I can't find a silicon coupler that is long enough. Autozone doesn't have anything that will work, so I'm going to have to try a performance shop around here. I decided to do the hybrid primarily for the heat soak issue. I already have a noticeable reduction in performance with the temps around here, and next week, we're supposed to have several 105+ days. I also don't like the lack of torque down low. So tomorrow, I hope to have the hybrid up and running.

Until then...
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