played with timing and bumper her up to 12* degrees advanced!

[Mad-Mic]

i played with timing tues night with a friend thats from www.thirdgen.org . he works at a shop that specializes in F-Bods www.fbodycentral.com the timing is bumped up to 10-12 degrees. got a base time with the timing light but the damn dampner was greasy and only seen 1 of the marks. didn't help that it was dark with the outside flood light on and a flash light :gap (backyard mechanics 101 at it's best :gap) so Tony and i took that for the base time and bumped it up twice with 2 test runs. no pinging at all and at a 10 mph roll she wants to break the rear tires loose on a WOT romp! i can feel her break loose alittle but not alot. 20 more hp or so i think she will so after i get some simple green and clean the dampner up some we are gonna retime it.

mods done upto date:
Mostly stock all "free" and "cheap" mods K&N open air box, MAF descreened, TB Bypassed, 160* T-Stat, Accel Super Coil, timing set 10*-12* degrees and No Mufflers just turn downs on the rear Y pipe. she already had an air-foil on the TB. Freshly Tuned up 3 weeks ago.

Front Y pipe going on saturday with a fresh oil change might be buying Tony's 3000 stall convert cheap. his wholesale cost was $450. he wants a tighter stall because his 89 Trans Am is his everyday driver and i think that will seriously help my 2.59 rear gear with a set of DR's 1.7 60' 's here i come!

i'm going to Test and Tune Friday night. if i can get her staged at 160ish water temp and hit a low 2.0 60" and run 98-99+ mph i think she'll brake into the 13's. i'm starting to have serious traction problems now i know how to launch the car. spring time i'm gonna need a set of DR's. i see this coming after the intake/cam/reworked heads swap especially!

tonight, with the dryer air, i took her to school tonight so i could play alittle when i got out. definetly no more bog at all! i am so happy well lets get onto it.....

i can definetly hear the rear wheels spin over on the 5-10 mph punch. at idle in park or neutral i sat at school and just listened to her. jabbing the throttle from dead idle 600 rpm to 2000-2500 rpm. it is real crisp with no bog. i thought the bog was from a rich factor that these cars have. launches are more consistent and real hard! i stopped on a back road and stalled out maybe 1100 rpm and let her rip. WOWSA! those 285/40/17's with the 2.59 rear gear lit the *^&$ up! seen average of 4700 rpm with a spike of 1 yellow bar around 5100 rpm then backed back down to around 4700 rpm and finally hooked. when she hooked i immediatly slapped into 2nd gear and she bit hard with a nice loud chirp at 4900 rpm. she's never spun up from a launch to 5100 rpm! now if i dead idle romp her she'll spin up to around 3500-3700 rpm then fall back alittle to around 2700 rpm when hooking. before the timing this is how the car reacted unless i max stalled it and got lucky with the launch. it always seemed like she'd fall on her face unless i got the perfect launch but now i am truely impressed with the L98 pretty much stock.

sheez she is starting to come alive.....Alive i tells'ya!

*Edit: this post is actually a 2 parter from my front Y pipe question post with what i noticed tonight

 

[RedRagTop]

Mad-mic; I know we have discussed this point here at the CAC but, in YOUR opinion, did descreening the MAF give you any seat of the pants increase? I wonder if it's worth the gamble as long as my air filter is snug and she don't burp back up into the wire. I'd hate to break the MAF!

 

[Mad-Mic]

i can't say from just that. i did the maf, tb bypass and cut airlid at the same time. them 3 DID do alot IMO. i would say 10-20 hp. it's very easy. take the maf out and take a razor knife and just cut along the edge and pull the screen up while you do it. clean it up with the razor blade and your done. took about 15 mins at most!

 

[vader86]

L98 does respond well to advanced timing, but do keep an ear out for detonation/knock when you have it that far advanced.

 

[Mad-Mic]

yeah i know about knock but there is none just runs very strong now!

 

[Doktor-t]

ignition

I did also bump my timing from the stock setting to 10 degrees. I also upgraded to 98 octane fuel. I think it was a noticeble difference.

So far I´ve done the following mods: Throttle body bypass, frisbee delete, AFPR, MAF descreening, adjusted the TPS from 0,42V to 0,54V. The car seemed to like the modifications and the next modifications will be AIR delete, new exhaust without cats and with good mufflers. I will also get a better aircleaner or cut the lid on the stock one.

Probably the car will respond greatly to these mods because the exhaust seems to be a great restricton.


Tobias

 

[Mad-Mic]

Tobias,

Here is a video of my exhaust. basically the same you are looking to do

http://www.corvettekillstories.com/photogallery/albums/Mad-Mic/Racing/Sweet_Sin.wmv

 

[juggernaut]

I loved the video. It sounds incredibly sinister!!

 

[Mad-Mic]

I loved the video. It sounds incredibly sinister!!

thanks! believe it or not thats on a stock cam

 

[Doktor-t]

exhaust

Exhaust tone really makes the car make a destinctive statement at the road. My car still has the stock exhaust but that be for too long I can assure you!