guidence on miniram
Thread Starter
Intermediate
Joined: Feb 2007
Posts: 28
Likes: 0
From: clarksville tn
guidence on miniram
ok im a newbie but tryin to learn. ive read vaders page and been researching other sites. my 90 is COMPLETLEY stock. i got some stuff in mind us tryin to map it out before i start. i know exhaust first so on and so on... workin on it!
heres my ?
can you jus put the miniram and fuel rails on and it work fine with out causeing problems? im sure a custom chip should be in there most def. cost of items and labor im guessing around 1700?
im sure this has been done numerous times and im probably gonna get alotta flack for this one but hey im a newbie throw me a freakn bone here! lol
thanx
heres my ?
can you jus put the miniram and fuel rails on and it work fine with out causeing problems? im sure a custom chip should be in there most def. cost of items and labor im guessing around 1700?
im sure this has been done numerous times and im probably gonna get alotta flack for this one but hey im a newbie throw me a freakn bone here! lol
thanx
Burning Brakes
Joined: Aug 2006
Posts: 1,061
Likes: 99
From: Seattle WA
It will "work", but it's not where I'd spend my first $1.5k. You'll probably end up losing a bit of the famous (infamous) TPI torque while your cam & exhaust will prevent you from picking up the high-end HP the miniram is capable of delivering.
Others may have different opinions, but I'd do the bolt-on mods in this order: exhaust, cam, intake, then heads. (OK, technically, a cam and heads aren't bolt-on, but I define anything where you don't have to pull the motor as bolt-on).
Others may have different opinions, but I'd do the bolt-on mods in this order: exhaust, cam, intake, then heads. (OK, technically, a cam and heads aren't bolt-on, but I define anything where you don't have to pull the motor as bolt-on).
Instructor
Joined: Apr 2005
Posts: 209
Likes: 1
From: Renton WA
I recently got a torque converter and an exhaust system, and I can already tell the difference. My C4 sounds much better than it did stock, and has a lot more "get up and go". I'd definitely go exhaust-converter first... after that, I think I'll probably get a mild increase in rear gear ratio, then maybe the cam/rockers/heads/intake route.
Thread Starter
Intermediate
Joined: Feb 2007
Posts: 28
Likes: 0
From: clarksville tn
yeah it probably would be wisher to go with some cheaper bolt on mods first huh. you know how it is tho. you want it all and right now. lol
tranzor sounds like youre tryin to mod yours for low end. thats my plans also.
what brand toeque con did you use? what exhaust did you go with?
thanx for the input guys!
tranzor sounds like youre tryin to mod yours for low end. thats my plans also.
what brand toeque con did you use? what exhaust did you go with?
thanx for the input guys!
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
MR will have throttle tip-in issues without a chip made for your engine, but you can just put it on. Dont expect it to run great though.
2200-2400rpm TC would be sufficient for both a TPI and mild-MR'd engine.
If you are set on a gear change, wait until after going to the MR intake.
2200-2400rpm TC would be sufficient for both a TPI and mild-MR'd engine.
If you are set on a gear change, wait until after going to the MR intake.
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Safety Car
Joined: Dec 2004
Posts: 4,088
Likes: 0
From: Poop land
To prevent the "throttle tip in" issues", you need to run more base timing. I run 12 degrees and fill'er up with premium gas so it does just fine with no pinging issues. Also more base timing gives you back some torque you lost when you still had the TPI in.
Safety Car
Joined: Sep 2003
Posts: 3,599
Likes: 24
From: Orange County NY
St. Jude Donor '10-'11-'12-'13
Perhaps, but the correct way to resolve the issue would be as vader86 advised; have the chip re-programmed (acceleration enrichment would need to be increased).
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
Doing this is going to change timing globally, which at other rpm ranges and KPA, may or may not be needed. Adjusting the entire tune (lower and upper VE in conjunction w/timing, PE etc.) for his MAP car would be a better approach.....IMO
Safety Car
Joined: Dec 2004
Posts: 4,088
Likes: 0
From: Poop land
All you'd need to do is fatten the injector pulse width a little bit, especially on the lower rpms. I did this globally on my chip. A/F ratio on med. throttle - WOT runs just fine EXACTLY at 12.8:1 when last dynoed. Now that's pretty close! My car felt like it was misfiring on top when the target A/F ratio was set at 13:1. I'm gonna see how the car does when richer up top, like 12.5:1 for PE.
Safety Car
Joined: Jun 2000
Posts: 4,870
Likes: 25
From: Long Island, NY
I wouldn't install a Miniram on a stock Vette.
There are many other mods that will work very well.
Start with Headers and a Cat back exhaust.
Then you can get aftermarket Runners and Lower Manifold.
My limitied experience with my new Miniram combo tells me that it likes to rev very high and that is where is makes power.
Vic
There are many other mods that will work very well.
Start with Headers and a Cat back exhaust.
Then you can get aftermarket Runners and Lower Manifold.
My limitied experience with my new Miniram combo tells me that it likes to rev very high and that is where is makes power.
Vic
Safety Car
Joined: Dec 2004
Posts: 4,088
Likes: 0
From: Poop land
There is roughly half a second difference at the drag strip from running stock 6 to 12 degrees of timing. Yeah, the car definitely feels laggy and underpowered when runs were made with 6 degrees. It will sometimes backfire from the intake at times when cold. I ran a 14.07 @ 98.91 mph with stock timing, from most of my consistent 13.6x @ 104.xx mph runs. So the answer is yes it does; most of it. 
Safety Car
Joined: Sep 2003
Posts: 3,599
Likes: 24
From: Orange County NY
St. Jude Donor '10-'11-'12-'13
There is roughly half a second difference at the drag strip from running stock 6 to 12 degrees of timing. Yeah, the car definitely feels laggy and underpowered when runs were made with 6 degrees. It will sometimes backfire from the intake at times when cold. I ran a 14.07 @ 98.91 mph with stock timing, from most of my consistent 13.6x @ 104.xx mph runs. So the answer is yes it does; most of it.
Drifting
Joined: May 2004
Posts: 1,747
Likes: 1
From: Port McNicoll Ontario
Some cars like you to advance the timing, some don't. I know mine doesn't.
There had to be other factors helping you get 1/2 a second with only timing being changed.
13.6@104 on a stock L98 is not normal. In 3 years of being on this forum I have never heard of anyone else getting these numbers.
With all my bolt ons and perfect conditions at the track I got 13.55@101.
Maybe I missunderstood you and the car wasn't stock.
There had to be other factors helping you get 1/2 a second with only timing being changed.
13.6@104 on a stock L98 is not normal. In 3 years of being on this forum I have never heard of anyone else getting these numbers.
With all my bolt ons and perfect conditions at the track I got 13.55@101.
Maybe I missunderstood you and the car wasn't stock.
Last edited by 87 rag; Mar 4, 2007 at 08:25 AM.