MIVEC build

[Chris@Rvengeperformance]

As much as it hurts, aem may be the more adept route for this

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Your question doesn't make a lot of sense. You aren't using a true speed density system here, chrome bases load off the maf signal, it doesn't give a care what your displacement is. I had to make zero changes to go 3.4 liters. The maf will simply pickup the extra flow and minor tuning may be necessary as you hit different load cells.

[dpartinvr4]

Its the VE that seems to be the problem, I put a 10:1 bottom end in my vr4, And I had all sorts of strange issues show up

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[dpartinvr4]

So a 3.8 with 10.5:1 only seems to be a headache waiting

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[murphys_law]

Aem series 1 are dirt cheap. Cheaper than chrome actually, at least what I've seen lately.

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[Chris@Rvengeperformance]

Its the VE that seems to be the problem, I put a 10:1 bottom end in my vr4, And I had all sorts of strange issues show up

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The ecu doesn't know or care what your ve is. It is just going to output fuel based on its airflow signal and load maps. There's nothing you can't tune out. If an engine combination is difficult to tune, AEM isn't going to necessary help and could make it a lot harder.

[Chris@Rvengeperformance]

Aem series 1 are dirt cheap. Cheaper than chrome actually, at least what I've seen lately.

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A V2 I could see investing in, but a V1 is worse than chrome IMO.

[murphys_law]

A V2 I could see investing in, but a V1 is worse than chrome IMO.

I'm curious as to why you would say that? I have no allegiance to either, but it seems that there are many v1 running high hp cars(not just in the 3s.)

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[Chris@Rvengeperformance]

I'm curious as to why you would say that? I have no allegiance to either, but it seems that there are many v1 running high hp cars(not just in the 3s.)

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I don't think there is a power limit, but here is a bit of a list.

1)v2 starts better
2)v2 has native support for flex fuel
3)v2 uses usb instead of serial
4)v2 has a much faster processor and logging space
5)v2 supports more inputs
6)v2 and the 98/99 ecu's just run smoother
7)v2 was designed around the newer aem tuner
8)v1 has no official aem support, hardware or otherwise. Repairs must be done by third parties.

I'm sure there are a lot more things, but I don't have much personal experience. I think v1 might be fun to get your feet wet, but if I was going to take the time to properly tune a standalone I'd get a v2. I've thought about it, but chrome runs so perfectly I can't convince myself to change.

[murphys_law]

I don't think there is a power limit, but here is a bit of a list.

1)v2 starts better
2)v2 has native support for flex fuel
3)v2 uses usb instead of serial
4)v2 has a much faster processor and logging space
5)v2 supports more inputs
6)v2 and the 98/99 ecu's just run smoother
7)v2 was designed around the newer aem tuner
8)v1 has no official aem support, hardware or otherwise. Repairs must be done by third parties.

I'm sure there are a lot more things, but I don't have much personal experience. I think v1 might be fun to get your feet wet, but if I was going to take the time to properly tune a standalone I'd get a v2. I've thought about it, but chrome runs so perfectly I can't convince myself to change.

I'll absolutely agree on v2 being better than v1, I was referring specifically to chrome. It seems that you think it's not worth the change unless you go v2. Got it.

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[Chris@Rvengeperformance]

I'll absolutely agree on v2 being better than v1, I was referring specifically to chrome. It seems that you think it's not worth the change unless you go v2. Got it.

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yes, that is what I think. Chrome has such a great basemap, you can get any practical setup pretty darn driveable in just minutes. The closed loop is really, really good too. You would have no clue my car wasn't 100% stock driving it around. Starts on the first crank, got about 20 MPG on a highway trip on e85 Friday, consistently hits my desired afr, even after not touching the tune since April, etc.