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MAP EF-series Turbochargers results thread

 
Old Jul 30, 2011, 03:27 PM
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Originally Posted by Boosted Tuning View Post
All the RS's have the same curb weight ie 3175. I just did a lot of behind the scene weight loss techniques.

Removed front bumper support (aka crash beam)
Removed rear bumper support (aka crash beam)
Removed IC sprayer reservoir
Removed spare tire, jack & tools
Removed 35lbs from using TBE (WORKS DP, Buschur TP & Cat-back)
Removed steering column bracket
Missing headliner ( I dont want this to be missing. Trying to find a RS headliner to put in.)
ETS mini battery kit
Enkie RPF-1 17x8
Removed washer fluid reservoir

My RS also has IX seats, steering wheel, carbon dash trim and HVAC trim.

Ive heard both stories , im not sure what to believe on that one though?

https://www.evolutionm.net/forums/fu...rb-weight.html
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Old Jul 30, 2011, 03:35 PM
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love white evos.. very nice evo. that track looks dangerous as hell at that curve.. it just dips down.

also you should shoot for 12.5 afr at spool for maximum spoolup on 93oct.
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Old Jul 30, 2011, 03:42 PM
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Originally Posted by tscompusa View Post
love white evos.. very nice evo. that track looks dangerous as hell at that curve.. it just dips down.

also you should shoot for 12.5 afr at spool for maximum spoolup on 93oct.

LOL Thats just the track exit , i was going about 5 MPH.

Mine is Shooting for 13.3 in ecuflash , and hovers in the 12.6-12.8 range according to my AEM WB. Are you having better results with slightly richer and more timing?
I dont do as much tuning as you, maybe you know something i dont.
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Old Jul 30, 2011, 03:50 PM
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Originally Posted by getsideways View Post
Ive heard both stories , im not sure what to believe on that one though?

https://www.evolutionm.net/forums/fu...rb-weight.html
Yea. Theres some confusion over the curb weights.

Heres what all the service manuals say. Funny thing is I thought the 04 GSR weighed 3262, but the 04 service manual says 3320. But they dont specify if thats the GSR or the GSR w/ SSL. I "think" its the SSL.

Attached Thumbnails MAP EF-series Turbochargers results thread-evo-weights.png  
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Old Jul 30, 2011, 03:54 PM
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Originally Posted by tscompusa View Post
love white evos..
White EVOs are the best. Thats why mine is white

Silver is the second best color.

Originally Posted by getsideways View Post
LOL Thats just the track exit , i was going about 5 MPH.

Mine is Shooting for 13.3 in ecuflash , and hovers in the 12.6-12.8 range according to my AEM WB. Are you having better results with slightly richer and more timing?
I dont do as much tuning as you, maybe you know something i dont.
A slightly richer AFR will increase EGTs, which helps spool.
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Old Jul 30, 2011, 03:54 PM
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^ I guess im glad to have easy access to our corner weighting scales , Thanks for the info i never knew what to believe!
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Old Jul 30, 2011, 03:59 PM
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Originally Posted by getsideways View Post
^ I guess im glad to have easy access to our corner weighting scales , Thanks for the info i never knew what to believe!
Yeah. I have scales too. I love having them and knowing the accurate weights of my cars.
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Old Jul 30, 2011, 05:01 PM
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Looking good sir, and thanks for the efforts to compile everything in one thread!
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Old Jul 30, 2011, 10:15 PM
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Yeah now we just need a few more dyno charts ,,,, AHEM!
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Old Jul 31, 2011, 09:15 AM
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Originally Posted by Boosted Tuning View Post

A slightly richer AFR will increase EGTs, which helps spool.
Leaner AFR's increase EGT's
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Old Jul 31, 2011, 09:45 AM
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^Jay probably hit up happy hour early
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Old Jul 31, 2011, 12:30 PM
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Originally Posted by b16a95eg View Post
Leaner AFR's increase EGT's
Thats what most think, but a richer AFR n lower timing raises EGTs more and spools the turbo faster.
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Old Jul 31, 2011, 12:43 PM
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Originally Posted by getsideways View Post
^Jay probably hit up happy hour early
LOL no happy hour for me.

Here is a list of things to help spool and a thread of its discussion.

Top 10 notes for FASTER SPOOL

1) Less timing (Start with stock values during spool, tune from there)
2) Richer AFR (mid 12s during spool to max boost, then taper richer)
3) Hot pre turbo exhaust
4) Port head, manifold, turbo, O2 for more flow
5) Free flowing exhaust
6) BOV leak free
7) Free flowing, low pressure drop, high efficient FMIC
8) Waste gate sealed shut until peak boost is achieved (Higher tension)
9) Shortest intake pipes as possible
10) No boost or vacuum leaks

https://www.evolutionm.net/forums/ec...ter-spool.html

When using a richer AFR and less timing, the exhaust that comes out still has unburned fuel in it, that proceeds to burn in the exhaust runner, making your EGTs raise and helping to spool the turbo faster.
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Old Jul 31, 2011, 02:49 PM
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Ive tried the low timing method , even though it creates more boost earlier , the car feels laggy . And according to VD tests ive done , makes less power in spool versus shooting for high 12 AFRs and maxing timing to the engines desire (however peak torque was made earlier and came on stronger which is undesirable to me on a stock block). That was on the stock turbo though , maybe with this larger one it could change.

The statement that richer AFRs create higher EGTs is false by itself , This is common knowledge, (Only when coupled with very low timing could this be correct) . Decreasing timing would be primarily responsible for the higher EGTs .

I will try the low timing and slightly richer method later this week and post back to back results.
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Old Jul 31, 2011, 03:01 PM
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I have seen lean mixtures make a turbo spool much faster than a rich mixture.
You forgot to add cam timing to your list. Intake cam advance will make boost quicker
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