Renegade Intake





The foundry I talked with today has a very large flask and right now it seems that is doable and I will be sending them a lot of documentation that they need right after I receive the NDA back from them and we can move forward. There's a lot of IFs here, but it does look somewhat good so far. The site is updated and anyone that is interested can go there and find information on things that I think people need to know. Thanks and that is all...















The Best of Corvette for Corvette Enthusiasts
Now to the good stuff people actually care about. I installed the intake in August and I'm in west central Missouri so the first startup was definitely hot and humid. The first night I took out the car I was able to put down a 14.34 and it ran fairly well. I then had the car with me in Columbia and daily drove it at college with 0 issues related to the intake for 7 weeks. This involved a lot of ripping it around campus and sitting in city traffic. It did try to stumble on launch when it got down around freezing and the motor was cold but that is probably because I still don't have an IAT sensor and I haven't adjusted the tune for the cold. After running many VE learns on my EBL Flash II, the car put down a 14.08 but that was on November 6th. I'm not sure how much of that difference was the tune, how much was the weather, or how much of it was me realizing I could rev it our more. Before the intake, I had only ever run a 15.1 and that was with my Melrose long tube headers and exhaust system. The car now pulls to 5200 rpm easily and it feels like it runs out of cam at that point. The fact that I was able to take a technically flawed intake and end up with such good results is very impressive. I almost forgot to mention that my fuel economy improved as well. I can run 80 down the interstate and average 25 mpg. Hopefully @Buccaneer is able to get those intakes made again someday so every CFI owner can have one. After all these years I'm extremely grateful to have gotten my hands on one and install it myself. I'd like to thank everyone on this forum for their help along the way as well. If I ever build a motor for that car I'm slapping that Renegade on top and keeping it CFI





That being said with a renegade it probably needs some tweaking.





That being said with a renegade it probably needs some tweaking.
Now to the good stuff people actually care about. I installed the intake in August and I'm in west central Missouri so the first startup was definitely hot and humid. The first night I took out the car I was able to put down a 14.34 and it ran fairly well. I then had the car with me in Columbia and daily drove it at college with 0 issues related to the intake for 7 weeks. This involved a lot of ripping it around campus and sitting in city traffic. It did try to stumble on launch when it got down around freezing and the motor was cold but that is probably because I still don't have an IAT sensor and I haven't adjusted the tune for the cold. After running many VE learns on my EBL Flash II, the car put down a 14.08 but that was on November 6th. I'm not sure how much of that difference was the tune, how much was the weather, or how much of it was me realizing I could rev it our more. Before the intake, I had only ever run a 15.1 and that was with my Melrose long tube headers and exhaust system. The car now pulls to 5200 rpm easily and it feels like it runs out of cam at that point. The fact that I was able to take a technically flawed intake and end up with such good results is very impressive. I almost forgot to mention that my fuel economy improved as well. I can run 80 down the interstate and average 25 mpg. Hopefully @Buccaneer is able to get those intakes made again someday so every CFI owner can have one. After all these years I'm extremely grateful to have gotten my hands on one and install it myself. I'd like to thank everyone on this forum for their help along the way as well. If I ever build a motor for that car I'm slapping that Renegade on top and keeping it CFI
I'm thinking a few things here. I'm thinking that I LOVE the 1+ second reduction in your 1/4 mile time!......but I also think that there's more in the car. When I first got my '83 CFI TA, I put in a
*T5,
*Edelbrock TES "headers", Y (shorty crimp collector headers w/a 2.5" Y pipe) and a single cat (no cat back at all)....and
*"free mods" (t-stat, timing, fuel pressure).
* a 3.45 rear
.....and in that configuration, it went 14.5x at 95 mph. Keep in mind, this was a 305 engine and using the box stock, unported intake. Only changes to the engine were coolant temp, timing and fuel pressure. With that in mind, I think your 15.1 baseline w/headers and exhaust should have been at least as good as my 305 w/shorty headers. If that were the case, you'd be solid, mid 13's which I think a CFI car with a renegade, LT headers and exhaust should be able to do.
What elevation is your track at? What were your traps, with those ET's?
I'm thinking a few things here. I'm thinking that I LOVE the 1+ second reduction in your 1/4 mile time!......but I also think that there's more in the car. When I first got my '83 CFI TA, I put in a
*T5,
*Edelbrock TES "headers", Y (shorty crimp collector headers w/a 2.5" Y pipe) and a single cat (no cat back at all)....and
*"free mods" (t-stat, timing, fuel pressure).
* a 3.45 rear
.....and in that configuration, it went 14.5x at 95 mph. Keep in mind, this was a 305 engine and using the box stock, unported intake. Only changes to the engine were coolant temp, timing and fuel pressure. With that in mind, I think your 15.1 baseline w/headers and exhaust should have been at least as good as my 305 w/shorty headers. If that were the case, you'd be solid, mid 13's which I think a CFI car with a renegade, LT headers and exhaust should be able to do.
What elevation is your track at? What were your traps, with those ET's?
If you don't mind, what's the timing table looking like and what's your base and max timing?
I started off with the 84 specific tune y'all are talking about and made changes from there. Primarily getting my 4+3 OD to work and at one point I was having insane spark knock issues. When I went to put the Renegade on I found my harmonic balancer was slipping a ton. Replacing that fixed most of my spark knock issues but my tables are still screwed up from when I was trying to retard certain areas and see if the knock went away. I'll post them in a bit, but fair warning, they're bad. Now the only time I get knock is if stomp on the throttle too quickly, and the car will not come out of it during acceleration. If it happens I have to let off and let the car kind of reset before I romp on it again. At one point I'd researched how to fix it and found a probable solution but I never went and messed with the tune.
I started off with the 84 specific tune y'all are talking about and made changes from there. Primarily getting my 4+3 OD to work and at one point I was having insane spark knock issues. When I went to put the Renegade on I found my harmonic balancer was slipping a ton. Replacing that fixed most of my spark knock issues but my tables are still screwed up from when I was trying to retard certain areas and see if the knock went away. I'll post them in a bit, but fair warning, they're bad. Now the only time I get knock is if stomp on the throttle too quickly, and the car will not come out of it during acceleration. If it happens I have to let off and let the car kind of reset before I romp on it again. At one point I'd researched how to fix it and found a probable solution but I never went and messed with the tune.
First, the 93.6 mph on the 14.08 is two things: A GREAT ET, for the trap speed indicating a killer launch/60' time? And the other thing is tells me is the HP is just not where it should be, for the mods. I think you should be 270+ NET, chp with the intake and exhaust. But 93 mph is more like 220 hp. Or so.
Second, is it looks like your total advance is 30* at WOT? Is that right? If so, I think it needs more. Is it getting enough fuel? Are you still running stock injectors?
First, the 93.6 mph on the 14.08 is two things: A GREAT ET, for the trap speed indicating a killer launch/60' time? And the other thing is tells me is the HP is just not where it should be, for the mods. I think you should be 270+ NET, chp with the intake and exhaust. But 93 mph is more like 220 hp. Or so.
Second, is it looks like your total advance is 30* at WOT? Is that right? If so, I think it needs more. Is it getting enough fuel? Are you still running stock injectors?
For the power though, I agree it seems like there should be a little more top end. I'd like to see the whole slip. Is it short tracking or picking up on the big end... That would indicate if the issue is something beyond what we're seeing.
93 is about all I was getting through a stock intake on my modded engine... Granted it was with an app on the street but should still be comparable. I'd say 95-96 mph is more where it should be at...
Yes it is 30* at WOT. That's still unchanged from the tune provided but Power Enrichment is enabled at that point so I'm getting an AFR of about 12. The injectors are technically stock but I had the throttle bodies rebuilt by Dr. Injector so the injectors were cleaned and tested then.








