New EMS, just tuned, very dissapointed - 3000GT/Stealth International Message Center

stealthystu · 03-29-2008, 09:38 PM

I just had an EMS installed and tuned. I was told it was a full tune, but I am hessitant to believe/accept that.

When I am not in gear, if I blip the throttle 30% or so, there is literally a second delay before the rpm's jump. This is particularly bad because that means that when the throttle is opened, there's not additional fuel, and when the throttle is back to idle, all the fuel is shot in at once.

I'm worried about the effects such a laggy system can have on my engine. Is this normal or is it not fully tuned for general driving?

Monster Stealth · 03-30-2008, 08:45 AM

Who tuned it? A reputable shop? Have you talked to them about the issue?

Gray Haze · 03-30-2008, 08:51 AM

Accel trim's weren't adjusted for the tip in adjustments. Neither was decel.

stealthystu · 03-30-2008, 02:09 PM

Quote:

Originally Posted by Gray Haze

Accel trim's weren't adjusted for the tip in adjustments. Neither was decel.

Thanks, that's what I was looking for. That'll definitely make things smoother, will it also help the delay?

Gray Haze · 04-02-2008, 03:45 PM

yes, extremly.

niterydr · 05-02-2008, 08:09 PM

Quote:

Originally Posted by Gray Haze

Accel trim's weren't adjusted for the tip in adjustments. Neither was decel.

Also check timing advance in lower rpm regions and the overall fueling maps, those could be off as well.

stealthystu · 05-02-2008, 09:03 PM

Yeah, the shop is "working" with me. Barely. Is there a good way I could learn how to tune the EMS? Is the manual (the 2xx page one) worthwhile? How would you learn it?

niterydr · 05-04-2008, 02:37 PM

Quote:

Originally Posted by stealthystu

Yeah, the shop is "working" with me. Barely. Is there a good way I could learn how to tune the EMS? Is the manual (the 2xx page one) worthwhile? How would you learn it?

The aem manual does a good job of explaining what table does what, under most circumstances.

As far as tuning, there are a few good resources on this forum and the internet in general. Tuning in itself is a mix of an exact science and art.

SLAYER4ALL · 05-11-2008, 11:29 PM

Who did your tune in the area stu?

03-29-2008, 09:38 PM	#1 (permalink)
stealthystu Excitable at high speeds Join Date: Aug 2006 Trader Rating: (8)	New EMS, just tuned, very dissapointed I just had an EMS installed and tuned. I was told it was a full tune, but I am hessitant to believe/accept that. When I am not in gear, if I blip the throttle 30% or so, there is literally a second delay before the rpm's jump. This is particularly bad because that means that when the throttle is opened, there's not additional fuel, and when the throttle is back to idle, all the fuel is shot in at once. I'm worried about the effects such a laggy system can have on my engine. Is this normal or is it not fully tuned for general driving? __________________ She's my little duece coupe....You don't know, what I got...

03-30-2008, 08:45 AM	#2 (permalink)
Monster Stealth Forum user Join Date: Jun 2001 Location: Fort Wayne, IN Drives: 93 VR4 & 99 A4 1.8T Trader Rating: (18)	Re: New EMS, just tuned, very dissapointed Who tuned it? A reputable shop? Have you talked to them about the issue? __________________ Performance 6G72 Rebuilt w/ 3SX Stage 3 Heads (+1mm intake/exhaust) - ARP Headstuds, Wiseco 8.5:1 Forged Pistons & Kevlar Timing Belt - TD04 9B - Greddy Profec B Spec 2 Boost Controller – Greddy Turbo Timer - SSQV BOV - K&N FIPK - Dejon Tool Y-Pipe - Dejon Tool Intake Pipes - OEM 360cc Injectors - IPO Hotwire Kit - EK2 Fuel Rail Loop – eBay 3” Downpipe w/ custom Flex Section - IPO UD Pulley – RPS MAXX Street Clutch - Maximal Xcase Bracket - MSD 8.5mm Plug Wires - NGK Copper Plugs - Maximal Performance Front & Rear Solid Motor Mounts - 3SX EGR Block Off Plates - Vac. Reduction - AC Delete – Cruise Control Delete - ProSport Gauges (Boost, EGT) - Odyssey PC680 Under Fuse Box Sitting in garage: EVO 560cc Injectors - MAP ECU - WRX 13T Turbos - Krank Vents - Walbro 255 Suspension/Wheels/Brakes OEM 17” Chrome Wheels – 245/45/17 Michelin XGT Z4's Sitting in garage: RSR Springs – Bilstein Struts – Maximal Adj Control Arms Exterior/Interior/Dress-up* Autometer 2x52mm Gauge Pod - 99 Rear Center Garnish – Weevil Custom Boost Controller/Turbo Timer Mounting Plate – Snake Eyes Delete Sylvania Silverstar H4666ST – Powder Coated Upper/Lower Intake Manifold, Front/Rear Valve Covers, Y-Pipe, Waterneck, & Alternator Bracket 6G72 Engine Manual - M-Spec Vac Reduction Diagrams - My Picasa Web Album

03-30-2008, 08:51 AM	#3 (permalink)
Gray Haze F#&K Race Gas. Join Date: Mar 2002 Location: Fort Worth, Texas Drives: 3S's Since Feb 2002. Trader Rating: (25)	Re: New EMS, just tuned, very dissapointed Accel trim's weren't adjusted for the tip in adjustments. Neither was decel. __________________ 1992 3000GT VR-4 #15 of 24. The ORIGINAL Sandstone Gray '99 Conversion. Blown, Stroked, Bottled. And what? www.3stech.org - Now with 100% less invite codes! Free Registration!

04-02-2008, 03:45 PM	#5 (permalink)
Gray Haze F#&K Race Gas. Join Date: Mar 2002 Location: Fort Worth, Texas Drives: 3S's Since Feb 2002. Trader Rating: (25)	Re: New EMS, just tuned, very dissapointed yes, extremly.

05-02-2008, 09:03 PM	#7 (permalink)
stealthystu Excitable at high speeds Join Date: Aug 2006 Trader Rating: (8)	Re: New EMS, just tuned, very dissapointed Yeah, the shop is "working" with me. Barely. Is there a good way I could learn how to tune the EMS? Is the manual (the 2xx page one) worthwhile? How would you learn it?

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05-11-2008, 11:29 PM	#9 (permalink)
SLAYER4ALL Forum Member Join Date: Dec 2000 Location: chicago, IL Trader Rating: (2)	Re: New EMS, just tuned, very dissapointed Who did your tune in the area stu? __________________ 95 mitsubishi 3000GT